Burning the forest just once can leave behind enough black carbon to keep the soil fertile for thousands of years.
森林仅仅燃烧一次就能留下足够的黑碳,来保持数千年土壤肥沃。
For years he managed to keep up the fiction that he was not married.
多年来他设法一直给人一种未婚的假象。
Pledging to run Pilgrim safely, the company has applied for federal permission to keep it open for another 20 years.
为了保证 Pilgrim 的安全运营,该公司已经向联邦政府申请了继续运营20年的许可。
Many years later, settlers used the tar,or asphalt, on the tops of their houses to keep water out.
VOA: special.2010.04.07
I'm 43 years old and I plan to keep doing all the exercises that I love doing, you know, until I die.
我今年43岁,我准备一直做那些我喜欢的运动,你知道,一直到我死。
Mr.Stevens says a one hundred percent increase in fish farming over ten years is necessary to keep providing for people at the current level.
VOA: special.2011.02.08
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