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更新日期:2026-08-14
firm sth ↔ up 1. to make arrangements, ideas etc more definite and exact把〔安排、想法等〕确定下来:•We're hoping to firm up the deal later this month.我们希望能在这个月晚些时候敲定这笔买卖。2. to make a part of your body have more muscle and less fat by exercising〔通过锻炼〕使〔身体〕结实