动词
中文翻译：落后
同义词：
['stagnate', 'lag behind']
例句：
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1. The team was lagging behind the other team in the race.
队伍在比赛中落后于对方。
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2. The project is lagging because of lack of resources.
由于缺乏资源，项目进展缓慢。
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3. The economy has been lagging for the past few years.
经济在过去几年里一直停滞不前。