名词
中文翻译：回电
同义词：
['return', 'callback', 'call-in例句：1. Please call me back when you have a moment.（请你有空时给我回个电话。）2. The phone rang and I had to call back immediately.（电话响了，我不得不立即回拨。）']
例句：
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1. Please call me back when you have a moment.
请你有空时给我回个电话。
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2. The phone rang and I had to call back immediately.
电话响了，我不得不立即回拨。
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3.He asked for the number of his call-back service.
他要求提供他的回拨服务号码。