Thus the near extinction of sea otters in the northern Pacific led to a proliferation of sea urchins, which then laid waste an entire kelp forest that had hitherto sustained its own ecosystem.
因此北太平洋海獭的近乎绝灭，导致了海胆的大量繁殖，海胆随后毁掉了迄今维持着自身生态系统的巨藻林。
In my country, we make so much waste, we buy and throw away, buy and throw away, and yet northern countries will not share with the needy.
在我的祖国，我们制造了如此之多的垃圾，我们购买商品，我们随之丢弃，买来，再丢弃。
So too the Northern Wei Dynasty Emperor five-year extension (439) Waste County, located in Yuzhong town.
北魏太武帝太延五年(439)废县，设榆中镇。
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