柯林斯词典fold up (folding,folded,folds) 1. PHRASAL VERB If you fold something up, you make it into a smaller, neater shape by folding it, usually several times. 将…折起来 She folded it up, and tucked it into her purse. 她将它折起来，塞进钱包里。2. →see also fold 返回 fold up