a refundable deposit的用法和样例：
- On payment of a refundable deposit of 160 and completion of an Insurance Proposal an Insurance Policy number can be issued to the student.
- Obtaining a refund from the company is a complicated procedure.
- I have been instructed by the company to offer you a refund.
- We ask for a refund because we are overcharge.
- I wonder if I can get a refund for this.
- Season- ticket holder will receive a refund if their train is cancelled.