押金英文：
cash pledge 押金；用作抵押的钱
deposit n.存款；保证金；定金；沉积物；沉淀；放置；押金；竞选押金
短语搭配
钥匙押金key deposit
退还押金return a deposit
退回押金refund sb's deposit;return a deposit
原始押金initial margin; original margin
预付押金advance/advanced deposit
例句
预订房间，你得付150元的押金。
You have to deposit ￥150 to reserve a room.
我必须收押金。
I must have a cash deposit as collateral.
我还想知道是否有我们必须支付的押金。
I also wonder if there is a deposit that we have to pay.
simple example
另外,银行还得收20%的押金.
Additionally the bank has to charge 20 % down payment.
当你使用卡的金额会扣你的押金。
When you use the card, the amount will be deducted to your deposit.
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