deposit 
英 [dɪˈpɒzɪt]  美 [diˈpɑzɪt] 
n. 订金；订钱；押金；沉积物

v. 放置；放下；付定金

例句：
We've saved enough for the deposit on the house. 

我们已经存够了房子的订金。

You have to pay a deposit when you book. 

预订的时候你得先交订金。

Under hire-purchase schemes, the buyer puts down a deposit of 10 to 15%. 

按照分期付款计划，买家须付10%到15%的预付款。

You are advised to deposit valuables in the hotel safe. 

建议把贵重物品存放在宾馆的保险箱里。

I deposited the money in a savings account. 

我把钱存在储蓄账户中了。