“无用的”用英语怎么说

“无用的”的英语可以翻译为:
useless,futile,[经] null,idle,unavailable
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  • “无用的”造句

    尽量避免无用的重复劳动。Try to avoid wasteful duplication of effort.一轮无用的会议an otiose round of meetings他认为试图劝她是无用的.He made it a useless attempt to advise her....