动词短语
中文翻译：倒填
同义词：
['backward filling', 'backfilling']
例句：
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1. The company was forced to backfill its workforce due to a sudden downturn in the economy.
由于经济突然下滑，公司被迫后补员工。
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2. The engineer had to backfill the hole in his car's engine after it broke.
工程师不得不在汽车引擎的洞里后补。
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3. The company decided to backfill the gap in its product line with new models.
公司决定用新型号来填补产品线的空缺。