Definitions

[1] n. 层次

1. Melting polar icecaps could also contribute to an increase in sea levels.
   融化中的极地冰盖也可以使海平面上涨的势态更加严重。
2. While most of us are significantly better off financially than our parents and grandparents, happiness levels haven't changed to reflect that.
   虽然我们大多数人比我们的父母、祖父母还要富裕得多，但是与之相应的快乐程度却没有多大的改变。
3. As global warming increases, sea levels get higher and higher.
   海面随着全球变暖的加剧而越来越高。
4. Yesterday my big brother went to Fukushima to help the locals. I'm very afraid of the rise in radiation levels.
   昨天哥哥去福岛给当地居民帮忙了。我对放射量的增加很害怕。
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