单词：earth metals
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单词：earth metals 相关文章
Here are some of the top economic stories of two thousand ten. The world continued to struggle with a slow recovery from the financial crisis two years earlier. Greece admitted to bigger-than-expected budget deficits. Investors punished Greece with m
2010年VOA慢速英语(十二)月
[00:01.00]Module 2 Developing and Developed Countries [00:09.22]Vocabulary and Listening [00:11.93]Activity 3 Check the meaning of these words [00:16.06]Now listen to the conversation and tick the topics you hear. [02:34.36]Activity 4 Listen again ch
外研社新标准高中英语必修（1-4）
第一句： We have been importing and exporting all kinds of metals and minerals for thirty years. 我们经营各种金属和矿石的进出口业务已经有30年了。 A: We have been importing and exporting all kinds of metals and minerals for
天天商务口语
This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Thars gold in them thar hillsand we may have meteorites to thank. Because it appears that a rain of meteors nearly 4 billion years ago peppered the Earths
Scientific American(九)月
This is the VOA Special English Economics Report. Few people had ever heard of the natural elements known as rare earth metals before a recent dispute between China and Japan. Yet these metals are used in devices like smartphones, flat screens, hybri
2010年VOA慢速英语(十)月
This is the VOA Special English Economics Report. Today we continue our report on the group of chemical elements known as rare earth metals. These are mined from the earth and used to make technology from mobile phones to missiles. The United States
2010年VOA慢速英语(十)月