007 潜艇内部探险

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It was the navy's Fleet Week

那是海军的舰队周。

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The bay was full of ships for people to see and visit

海湾里停满了供人们参观和登船游览的船只。

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Orson stood with his cousin Nick on top of a long black submarine

奥森和他的表哥尼克一起站在一艘黑色长潜艇的顶部。

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Nick was a sailor who worked aboard this underwater vessel

尼克是一名水手，就在这艘水下舰艇上工作。

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" What does this submarine do?" Orson asked

“这艘潜艇是做什么的？”奥森问道。

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" The navy uses submarines to help protect our country," Nick said

“海军使用潜艇来帮助保护我们的国家。”尼克说。

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" Most of our missions are for military research. Ready to see inside?"

“我们大部分的任务是进行军事研究。准备好进去看看了吗？”

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Orson shivered. The sub had no windows

奥森打了个寒颤。潜艇没有窗户。

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It seemed scary

这看起来有点吓人。

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Nick climbed down the ladder inside the hatch, the round opening that led into the sub

尼克顺着梯子爬进了舱口，那个通向潜艇内部的圆形开口。

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" Come on down," he called

“快下来吧，”他喊道。

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Orson cautiously stepped onto the ladder's first rung

奥森小心翼翼地踩上梯子的第一级。

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" Will the sub sink while we're on board?"

“我们在船上时潜艇会沉吗？”

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" Subs control when they submerge," Nick assured him as they climbed down the ladder

“潜艇可以控制下潜时机，”尼克一边爬下梯子，一边安慰他。

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" Tanks filled with air help them float

“充满空气的水箱能让它们浮起来。

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To submerge, we pump water into the tanks

要下潜时，我们就把水抽进水箱。

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That makes the sub heavier, so it goes down."

这样潜艇变重，就会沉下去。”

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" How does it get back up?"

“那它怎么再浮起来？”

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" We fill the tanks with air again to make it float."

“我们再把水箱充满空气，让它浮起来。”

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Nick grinned at him." We won't submerge today."

尼克朝他咧嘴一笑。“我们今天不会下潜。”

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Orson reached the bottom of the ladder

奥森下到了梯子底部。

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" Why is it so cramped in here?

“这里面怎么这么狭窄？

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The sub looks huge on the outside."

从外面看潜艇很大呀。”

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" Nuclear subs are big

“核潜艇是很大。

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This one is over ninety meters long, but the power plant and equipment take up most of the space," said Nick

这艘有九十多米长，但动力装置和设备占了大部分空间，”尼克说。

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" The 135 crew members get any room that's left."

“剩下这点儿地方就给135名船员住了。”

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He laughed." Some subs, like the ones they use for scientific research, are powered with oil

他笑了。“有些潜艇，比如搞科研用的那些，是烧油的。

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Oil-powered subs must surface every few days

烧油的潜艇每隔几天就得浮出水面。

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Nuclear subs can stay underwater for months."

核潜艇能在水下待上好几个月。”

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" Don't you run out of water and air when the sub stays underwater that long?"

“潜艇在水下待那么久，水和空气不会用完吗？”

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" We make our own fresh water and air."

我们自己制造淡水和空气。

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" We made fresh water in school!" Orson said

“我们在学校制造过淡水！”奥森说。

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" We boiled salt water and saved the condensed steam. Is that what you do?"

我们煮沸盐水，收集冷凝的蒸汽。你们也这样做吗？

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" Exactly," said Nick

“正是如此，”尼克说。

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" We make enough water for crew members to drink and take a three-minute shower every day

我们制造足够的水，供船员饮用，并让他们每天洗三分钟的澡。

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Most of the water, though, is used to cool equipment."

不过，大部分的水是用来冷却设备的。

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" How do you make air?"

“你们怎么制造空气？”

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" We take oxygen from water

我们从水中提取氧气。

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And we can reuse existing air by getting rid of the carbon dioxide people breathe out."

我们还可以去除人们呼出的二氧化碳，从而重复使用现有的空气。

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" Cool," Orson said

“真酷。”奥森说。

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Nick led Orson through rooms filled with computers

尼克领着奥森穿过摆满计算机的房间。

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" We navigate with GPS on the surface, but GPS doesn't work underwater

“我们在水面用GPS导航，但到了水下GPS就不管用了，

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So we navigate by keeping track of our direction and speed."

所以我们就靠追踪航向和速度来导航。”

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" How do you keep the sub from crashing into things?"

“那怎么不让潜艇撞上别的东西呢？”

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" We use sound. We listen for sounds from other ships

“我们用声音。我们监听其他船只发出的声音。

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We also use a device called sonar

我们还用一种叫‘声纳’的设备。

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It bounces sound off objects to detect and locate them."

它向物体发射声波，通过回声来探测和定位它们。”

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" That's what dolphins do!" Orson said

“海豚就是这么干的！”奥森说。

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They climbed down a narrow stairway

他们爬下一段狭窄的楼梯。

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Here beds were stacked three-high along the walls

这里的床铺沿墙叠成三层。

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" This is the crew's quarters."

“这里是船员住舱。”

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Nick pointed to a small drawer under one bed

尼克指着一张床下的一个小抽屉。

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" I keep all my stuff here."

“我所有东西都放在这儿。”

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" Everything?" Orson had a room full of stuff at home

“所有东西？”奥森在家里可是有一整间屋子的东西呢。

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" What do you do all day?"

“你们整天都做什么呀？”

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" I'm on watch for eight hours

“我要值八个小时的班。

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That's when I'm helping to operate the sub

这段时间我要帮着操作潜艇。

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When I'm not on watch, I still have to work to help clean and maintain the sub

不值班的时候，也还有工作要做，得帮忙打扫和保养潜艇。

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We get some free time too

我们也有一些自由活动的时间。

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Then I sleep for eight hours."

然后就是八小时的睡眠。”

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Suddenly the sub rocked

突然，潜艇晃动了一下。

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" Whoa!" Orson said

“哇！”奥森叫了一声。

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" Don't worry," Nick said

“别担心，”尼克说，

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" Waves rock subs on the surface, but it's smooth sailing underwater."

“潜艇在水面会受波浪摇晃，但到了水下就平稳了。”

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" I believe you." Orson smiled

“我相信你。”奥森笑了。

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" Living underwater seems like living in a spaceship!

“在水下生活，真像是在太空船里生活！

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But I think I like living on land better!"

不过，我想我还是更喜欢住在陆地上！”