名词
中文翻译：闲置的滚筒
同义词：
['idle drum', 'idle roller例句：1. The idle roller was a great help in the construction of the new bridge.（闲置的滚筒在建造新桥的过程中起到了很大的帮助。）']
例句：
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1. The idle roller was a great help in the construction of the new bridge.
闲置的滚筒在建造新桥的过程中起到了很大的帮助。
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2.The idle roller was used to clean the floor after the party.
闲置的滚筒被用来在派对后清洁地板。
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3. The idle roller was also used to grind grain into flour.
闲置的滚筒也被用来将谷物磨成面粉。