动词短语
中文翻译：储备
同义词：
['stand by', 'be prepared for', 'be on standby']
例句：
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1.The store has a lot of items in reserve for the holiday sale.
商店有很多商品为假日销售做准备。
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2. We need to have some food in reserve for emergencies.
我们需要储备一些食物以防紧急情况。
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3.She was in reserve when the fire broke out.
火灾发生时，她正在待命。