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multi-use; combined use; combination; serving two purposes
このソファはベッドとしても兼用できる優れものだ。
This sofa can also be used as a bed - it's excellent.
男女兼用のトイレが最近増えてきているようだ。
Unisex toilets seem to be increasing recently.
この道具は複数の用途に兼用できて便利だと思う。
I think this tool is convenient as it can be used for multiple purposes.