71-80

旁白 neutral

The documentary series explores the complex relationship between human civilization and the natural environment

这部纪录片系列探讨了人类文明与自然环境之间的复杂关系。

旁白 neutral

The invention of the wheel was a pivotal moment in human history , revolutionizing transportation and trade

轮子的发明是人类历史上的一个关键转折点，彻底改变了交通运输和贸易方式。

旁白 neutral

Scientists are working to understand the factors that led to the extinction of the dinosaurs millions of years ago

科学家们正致力于研究导致数百万年前恐龙灭绝的各种因素。

旁白 neutral

Modern manufacturing relies heavily on automated machines to increase production efficiency and precision

现代制造业高度依赖自动化机械来提高生产效率和精度。

旁白 neutral

The children sat in a circle , listening intently as the teacher told a captivating story

孩子们围坐成一圈，全神贯注地听着老师讲述一个引人入胜的故事。

旁白 neutral

Renewable energy sources , such as solar and wind power , serve as excellent examples of sustainable alternatives to fossil fuels

太阳能和风能等可再生能源，是替代化石燃料的可持续能源的绝佳范例。

旁白 neutral

Professional athletes undergo rigorous training programs to enhance their physical strength and performance

职业运动员需经历严格的训练计划，以提升身体素质和竞技表现。

旁白 neutral

Consumers should be cautious when using credit cards to avoid falling into a cycle of debt

消费者在使用信用卡时应保持谨慎，以免陷入债务循环。

旁白 neutral

Technology has had a profound impact on society , transforming the way people communicate , work , and live

科技对社会产生了深远影响，彻底改变了人们的沟通、工作和生活方式。

旁白 neutral

When conducting experiments , researchers carefully add precise amounts of chemicals to observe the reactions accurately

在进行实验时，研究人员会谨慎地添加精确剂量的化学物质，以便准确观察反应。