单词:hypogonadotropic amenorrhea
单词:hypogonadotropic amenorrhea 相关文章
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
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
托福考试话题词汇汇总 whitepollute白色污染 sustainabledevelopment可持续发展 ecosystem生态系统 environmentalpollution环境污染 over-fishing(overgrazing)过度捕捞(过度放牧) sandstorm沙尘暴 resourceexhaustion资源枯竭
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