本集内容 UK scientists to examine the world's oldest ice sample 英国科学家将仔细研究世界上最古老的冰层样本 文字稿 Extracted from deep beneath Antarctica, a core of ice ...

本集内容 Hyperloop: the train of the future? “超级高铁”：未来的交通工具？ 学习要点 有关“speed 速度”的词汇 边看边答 What is the Hyperloop? 文字稿 We're ...