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变互导管, 变跨导管
🗣️ 情景例句
I think something he can use is the best. A watch or something.
最好是实用的，像手表啦或什么的。
I'd like to deposit some money.
我想存点钱。
It would be a waste of money to buy the IBM PC586.
买IBM586就浪费钱了。