security deposit
noun /sɪˈkjʊərəti dɪpɒzɪt/
/sɪˈkjʊrəti dɪpɑːzɪt/
[usually singular] (especially North American English)- a sum of money you pay when you rent a place to live and that is returned when you leave if you do not cause any damage
保证金：您在租住住房时所支付的款项，如果不造成任何损害，则在离开时退还 - The landlord requires a security deposit of one month's rent.
房东要求交一个月房租的保证金。
- The landlord requires a security deposit of one month's rent.