refundable deposit的用法和樣例：
例句
- To help matters along,he offered to pay the deposit on the new house for them.
為了解決困難，他主動(dòng)提出幫他們交新房子的定金。 - It was impossible living in a one-roomed flat after we had the baby but Dad pulled the chestnuts out of the fire by lending us the deposit for a house.
我們有了孩子以后不可能再居住在單間套房里了，爹爹幫了我們大忙，把買(mǎi)房的定金借給了我們。
