用过的纸；旧纸
先理解核心含义，再看它在真实句子里的用法。
用过的纸；旧纸；用过的纸；旧纸
paper that has already been used, typically no longer needed for its original purpose
Please put used paper in the recycling bin.
请把用过的纸放进回收箱。
用过的纸；旧纸
paper that has already been used, typically no longer needed for its original purpose
Use used paper naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
Dictionary facts from AI_SUPPLEMENT.