snags
n.
（尤指潜伏的）困难( snag的名词复数 );
尖利的突出物;
根株;
被刮破或钩坏的裂口;
v.
（被尖锐物）挂住( snag的第三人称单数 );
迅速抓到;
抢到;
抓住;
例句:
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This isn't so easy, so look out for the snags.
这并不那么容易, 当心碰到意想不到的困难.
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These instruments are vulnerable to cable faults and snags.
这种仪器易于缠在岩石的断块和树枝上.
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The house will be ready next week if there are no snags.
如果没有任何意外困难的话,这房子将在下星期准备好.
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Her teeth were yellow snags loose in her jaws.
来自P. S. Buck
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Negotiations have been going on for days, but have hit numerous snags.
来自VOA
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It flies up in the heavy air and snags on a distant tree.
来自NEWYORKER