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闸轮机构
🗣️ 情景例句
My son must have put you to a lot of trouble.
我儿子一定给你带来不少麻烦。
If you dance you must pay the fiddler.
要想寻欢作乐，代价非付不可。
I hope our dreams come true.
我希望我们的梦想成真。