预付押金 meaning in Chinese

advanced deposits

Receptionist ： thank you may i ask for a deposit of 500
前台人员：谢谢。请您预付押金500元。
One : personal rent the car beard to hold oneself this city population originally , id card , driver certificate , prepay security deposit
一个人租车须持本人本市户口本身份证驾驶证预付押金。
Room reservation is held until 6 : 00pm unless guaranteed by abvance deposit or late flight details have been advised
若无预付押金保证金订房或预先通知晚班航班的抵达时间，酒店将保留预订的房间至到达当日下午6点。
Two : the unit rents the car beard to hold this city business license , business enterprise code certificate , legal person id card , contract chapter , manage person s id card , drive the certificate and prepay the security deposit
二单位租车须持本市营业执照企业代码证法人身份证合同章经办人身份证驾驶证预付押金。