1. 可退回的：可收到的;应收到的 receivable | 可退回的 returnable | 可以任选的 optional

2. danci.edu.pub

2. 可退：return 報告書,申報,繳還,歸還 | returnable 可退 | returns 贏利,利潤

3. 可归还的：returnable 应交还的 | returnable 可归还的 | returnable 可回答的

4. returnable在线翻译

4. 可回答的：returnable 可归还的 | returnable 可回答的 | returnaborrowedobjectwiththanksdeclineagiftwiththanks 璧还

1. (容器等)可回收的，可退回的
    Returnable containers are intended to be taken back to the place they came from so that they can be used again.

    e.g. All beverages must be sold in returnable containers.
           所有的饮料都必须装在可回收的容器中出售。

2. (金钱、文件等)可退还的，可归还的
    If something such as a sum of money or a document is returnable, it will eventually be given back to the person who provided it.

    e.g. Landlords can charge a returnable deposit.
           房东可以收取一笔可退还的押金。

1. that may be returned

    e.g. returnable bottles and cans
           this merchandise is returnable if you save the receipt