As a result of many such painstaking studies, our present knowledge of the oceans has accumulated.
由于许多这类的艰苦研究, 我们现有的关于海洋方面的知识才得以积累起来.
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数月来,以色列情报机构摩萨德一直在布陷阱, 不辞辛苦地跟踪一个目标.
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Make her first time as painless, comfortable, and hopefully as enjoyable as possible.
一定要让她的第一次感受到较少的痛苦, 让她舒适, 甚至享受.
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The deaths of human beings, as they are painless, convenient and discreet, are no big deal.
而人类的死亡, 只要他们死得没有痛苦, 死得方便而且经过认真考虑, 那么就算不上多大的事情.
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