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关注：1
2013-05-23 12:21
求翻译：Soon after 1770, Joseph Priestley discovered a gas which is now called "laughing gas". Laughing gas became known in America. Young men and women went to parties to try it. Most of them spent their time laughing, but one man at a party, Horace Wells, noticed that people didn't seem to feel pain when they were using this是什么意思？ 待解决
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Soon after 1770, Joseph Priestley discovered a gas which is now called "laughing gas". Laughing gas became known in America. Young men and women went to parties to try it. Most of them spent their time laughing, but one man at a party, Horace Wells, noticed that people didn't seem to feel pain when they were using this
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2013-05-23 12:21:38
后不久，1770年，普里斯特利发现了现在被称为“笑气”的气体。笑气成为在美国。青年男女到各方尝试。其中大多数他们的时间花在笑，但一人在一次聚会上，贺拉斯井，发现人们似乎并不感到疼痛时，他们使用这种气体。他决定做一个对自己的实验。他问了一个朋友来帮助他。井了一些气体，和他的朋友掏出一个很好的牙齿。井都感觉不到疼痛。因为他没有足够了解笑气，他给比他应该有一个人，少气。男子痛得哭了，当他的牙齿被拔出。井再次尝试，但这个时候，他给了太多气，男子死亡。井永远不会忘记这个可怕的事件。
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2013-05-23 12:23:18
1770后不久,而这种气体是约瑟夫·普里斯特利发现现在所谓的“笑气”。 在美国成为著名笑气。 年轻的男子和妇女前往各方尝试这件事。 他们把时间花在最大的大笑,但一个男人在一个方,霍勒斯·水井,似乎没
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2013-05-23 12:24:58
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2013-05-23 12:26:38
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2013-05-23 12:28:18
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