Unit70：Sentence 70

旁白 neutral

In common with

与...相同

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all mammals

所有哺乳动物

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reptiles

爬行动物（复数）

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and

和

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birds

鸟类（复数）

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In common with all mammals , reptiles and birds

与所有哺乳动物、爬行动物和鸟类一样

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the remote ancestors

远古祖先

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of

的

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tortoises

乌龟（复数）

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were

be（过去式）: 构成过去时

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marine fish

海洋鱼类

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the remote ancestors of tortoises were marine fish

乌龟的远古祖先是海洋鱼类

旁白 neutral

In common with all mammals , reptiles and birds , the remote ancestors of tortoises were marine fish

与所有哺乳动物、爬行动物和鸟类一样，龟类的远古祖先是海洋鱼类

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before that

在此之前

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various

各种各样的

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more or less

或多或少

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worm like creatures

蠕虫般的生物

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and before that various more or less worm like creatures

在此之前是各种多少像蠕虫的生物

旁白 neutral

In common with all mammals , reptiles and birds , the remote ancestors of tortoises were marine fish and before that various more or less worm like creatures

与所有哺乳动物、爬行动物和鸟类一样，龟类的远古祖先是海洋鱼类，在那之前则是各种多少类似蠕虫的生物

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stretching back

向后伸展

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still

仍然

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in the sea

在海里

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stretching back , still in the sea

可以追溯到，仍然在海洋中

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In common with all mammals , reptiles and birds , the remote ancestors of tortoises were marine fish and before that various more or less worm like creatures stretching back , still in the sea

与所有哺乳动物、爬行动物和鸟类一样，龟类的远古祖先是海洋鱼类，而在那之前则是各种或多或少的蠕虫状生物，这些生物的演化历程可一直追溯到仍处于海洋中的原始细菌时期

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to

到

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the primeval bacteria

原始细菌

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to the primeval bacteria

直至原始细菌

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In common with all mammals , reptiles and birds , the remote ancestors of tortoises were marine fish and before that various more or less worm like creatures stretching back , still in the sea , to the primeval bacteria

与所有哺乳动物、爬行动物和鸟类一样，龟类的远古祖先是海洋鱼类，而在那之前，它们的祖先则是各种或多或少的蠕虫状生物，这些生物可以一直追溯到仍生活在海洋中的原始细菌