The origins of glass date back to 3,500 BC but it wasn't until the Roman Empire, 2,000 years ago, that the art of glass-blowing and the practical uses of glass became more widespread.

玻璃的起源可以追溯到公元前3500年，但直到2000年前的罗马帝国，吹制玻璃的艺术和玻璃的实际使用才变得更加广泛。

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Your brain then uses other neurons to send the message back to your foot to shake the bee off quickly.

然后，你的大脑会利用其他神经元将信息发送回你的脚，以迅速甩掉蜜蜂。

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It includes four steps: seeing a word, getting back its meaning from your memory, connecting it to other words in the same sentence, and then moving on to the next word. This process uses many parts of the brain at one time.

它包括四个步骤：看到一个单词，回忆这个词的意思，将它与句子中其他单词联系起来，再看下一个单词。这个过程同时调动了大脑的很多部分进行工作。

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Ekin Oz uses Facebook and Skype to stay in touch with family and friends back in Turkey.

VOA: special.2009.09.14

And the boy uses the trees to do two things, right: to go up, or go out, and come back, to return.

这个孩子用树做了两件事：,上去，出去，回来，落下。

耶鲁公开课 - 现代诗歌课程节选

Remember back to Alexander H. Steven's cornerstone quote he uses the word "Natural" Twice in that passage.

还记得亚历山大·斯蒂文的柱石上的引文,这段引文中他用了"自然"这个概念两次

耶鲁公开课 - 美国内战与重建课程节选

Relocation experts say you might also want some pay in U.S. dollars for contributing to your retirement account, paying a mortgage in the U.S. and other uses back home.

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It uses loin back ribs, which used to mean the racks came from bigger pigs than those yielding baby backs, though the terms are now often used (or misused?) interchangeably.

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This analysis uses the seasonal indicator from Trade Navigator and uses data going back to 1984.

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