单词：drill pipe slip
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block and tackle 滑轮组 boring 钻孔 circulate 注入，环流 coring bit 取芯钻头 cutting bit 钻头 cylinder 圆柱体 derrick 井架 drill pipe 钻杆 every so often 时常 geologist 地质学家 gusher 喷油井 mineral 矿物的 rotate 使
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Lesson 89 slip of the tongue 口误 First listen and then answer the question. 听录音，然后回答以下问题。 Who made the only funny joke that evening and why? People will do anything to see
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Alice: Hello, I'm Alice Stephen: And I'm Stephen.Alice: And this is 6 Minute English! This week were talking about a very commonphobia a fear of the dentist and a possible new treatment. But first of all,Stephen, how does this sound make you feel? In
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Pink slip，粉红色的小纸片？可别误以为是一封浪漫的情书呀，其实，pink slip是一种最残忍的东西——解雇通知书！ Pink slip也叫做walking papers，可以追溯到
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TEHRAN, July 4 (Xinhua) -- The Iranian Islamic Revolution Guards Corps (IRGC) concluded the three-day missile drill on Wednesday with Iranian military officials warning against any military aggression on the country. On the third and last day of the
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