straightens
v.
（使）变直，把…弄直( straighten的第三人称单数 );
整理;
解决问题（或困难）;
挺直身子;
例句:
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After the bridge, the road straightens out.
过了桥之后, 路就直了.
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As the air around it cools , the metal straightens.
周围气温下降时,金属带变直.
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The road straightens ( out ) after a series of bends.
这条路经过几个转弯之后就直了.
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He laughs at something, and she straightens his collar.
来自NEWYORKER
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Maman straightens out on the floor as if she were yawning.
来自NEWYORKER
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He straightens himself up groggily, adjusting his headgear which had slipped.
来自BBC