What is meaning of material? What materials can you see in the picture? (图片上的回形针娃不会,所以要提下paper clip) What do you do using these materials? (娃当时回答I can u...
1、 Can you see the Great Wall from the ISS? 你能从空间站看到中国的长城吗? 2、 Do you sweat in the space and how do you handle it? 在空间站工作是否会出汗?如果有,如何处理? 3、 If air leak happens in the ISS, what emergency actions will be taken? 如...
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