名词中文翻译
中文翻译：备用鼓
同义词：
['backup drum', 'spare drum']
例句：
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1. The backup drum is essential for the performance of this piece.
备用鼓对于这场表演来说是必不可少的。
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2. The backup drum was used to provide additional rhythmic support during the performance.
备用鼓在表演中用于提供额外的节奏支持。
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3. The backup drums were carefully tuned before the show began.
演出开始前，备用鼓被仔细调音。