动词
中文翻译：拉紧
同义词：
['stretch', 'strain', 'tire']
例句：
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1.The marathon runner was straining to finish the race.
马拉松跑者正在努力完成比赛。
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2. She strained her voice trying to sing a high note.
她努力地唱出一个高音。
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3. The farmer strained his muscles to pull the heavy load.
农民努力地拉拽沉重的负荷。