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Trying to seal off an entire region of the world if that were even possible could actually make the situation worse.
尽力去封锁世界上的一个地区，即便这是可能的实际上只能让形势更加恶化。
《Your Weekly Address》《奥巴马每周电视讲话》
双语例句
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The city should seal off those tunnels.
这个城市应该封闭那些隧道。
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But we shouldn't fall and seal off ourselves.
但是我们应该堕落，更不能自我封闭。
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With this you can temporarily seal off any kind of evil.
用这个您可以暂时封住任何妖魔。
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The main function of Linclion pump is to seal off the lubricator.
林肯泵主要作用是密封注油头。
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A variety of schemes to either block up or seal off the blowout preventer are in development.
多种封闭或密封防喷装置的方案也在构思之中。
近义词
block outobturate