动词短语
中文翻译：倒退
同义词：
['fall behind', 'lag behind']
例句：
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1. The team has fallen behind in the competition.
该队在比赛中已经落后。
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2. The economy is falling behind in terms of innovation.
经济在创新方面落后了。
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3. The company's performance has fallen behind its competitors.
该公司的业绩落后于竞争对手。