单词：reentry ablation
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Lesson 46: Expensive and uncomfortable 既昂贵又受罪 First listen and then answer the question. 听录音，然后回答以下问题。 What did the man in this story do? When a plane from London arrived at Sydney airport, workers began to unload
新概念英语第二册
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This is the VOA Special English Agriculture Report. Agroecology students at Goshen College in Wolf Lake, Indiana Many colleges and universities in the United States provide education in agriculture. But only a few schools offer experience in traditi
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The chains of habit are generally too small to be felt until they are too strong to be broken. - Samuel Johnson Editors note: This is a guest post from Mary Jaksch of Goodlife Zen. Have you ever had problems establishing a new habit? Maybe I should a
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Reentry Heat [Why does a space shuttle get hotter on reentry than on liftoff?] 能想象航天飞机穿越大气层时受到摩擦产生的热量有多惊人吗？来一起听听吧。 M:Dolle,we now know that the space shuttle Columbia burned up whe
英语听力文摘 English Digest