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闸轮机构
🗣️ 情景例句
I'm thrilled for you, Grandpa.
我真为你兴奋， 爷爷。
Speech is silver (or silvern), silence is golden.
雄辩是银，沈默是金。
I like television very much.How much does it cost?
我非常喜欢这台电视机。请问它多少钱？