重点词汇
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二手
second-hand; secondhand; used; pre-owned
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材料
material; stuff; data; matter; makings; information; medium; handout; raw material; ingredient
中英释义：
第二手材料
时间: 2025-11-27 13:20:37
secondhand material
中英释义：
secondhand material
二手
second-hand; secondhand; used; pre-owned
材料
material; stuff; data; matter; makings; information; medium; handout; raw material; ingredient