Males between 18 and 20 had to leave a deposit as a guarantee of returning to do their military service.
18岁至20岁的男性必须留下押金作为回来服兵役的担保。
《柯林斯英汉双解大词典》
2
Sometimes her intervention has been welcomed, as when Ireland unilaterally extended a depositguarantee to its banks, putting other countries’ banks at a disadvantage.