便装；非正式服装
先理解核心含义，再看它在真实句子里的用法。
便装；非正式服装；便装；非正式服装
clothing that is casual and not formal
The invitation says informal attire, so no need to wear a tuxedo.
邀请函上写着便装出席,所以不必穿无尾礼服。
便装；非正式服装
clothing that is casual and not formal
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Dictionary facts from AI_SUPPLEMENT.