单词：hearth layer for sintering
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I first heard about the ozone layer about twenty years ago. I was still in school. I thought it was interesting, but I didnt take it seriously. It was a bit like science fiction, I mean, how could there be a giant hole in the atmosphere? Over the yea
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There is a special day to recognize the importance of the ozone layer. In 1995, the United Nations General Assembly decided September 16th is the International Day for the Preservation of the Ozone Layer. This is the date on which countries signed th
英语课程学习计划和讲义
Cats and Man Cats struck a bargain with 1 man about 5,000 years ago when he shifted from a nomadic 2 to an agrarian 3 society. As man began to farm, he stored grain. The grain attracted rodents 4 , wh
英语沙龙2004全年合辑下
I first heard about the ozone layer about twenty years ago. I was still in school. I thought it was interesting, but I didnt take it seriously. It was a bit like science fiction, I mean, how could there be a giant hole in the atmosphere? Over the yea
纯正英语一分钟
-On October 31st, dozens of children dressed in costumes（节日服装）knock on their neighbors' doors and yell Trick or Treat when the door opens. Pirates and princesses, ghosts and popular heroes of the day all hold bags open to catch the candy
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[00:06.44]I need some water. Of course. - 我需要水 - 好的 [00:11.80]Jane. 简 [01:10.04]How are you now? 现在感觉如何? [01:11.64]I will be well again soon. 过一会就没事了 [01:25.56]I know you. Youre thinking. 我了解你 你在思考
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