1. 破产：fly off the handle 平时有教养的人突然失去常态 | fold up 破产 | following sb's footsteps 效法;继承

2. 折叠起来：98.get sth ready准备某东西; | 99.fold up折叠起来; | 100.connect to接在---上,连在----上

3. 折叠：focal length 焦距 | fold up 折叠 | font 字体

4. 垮台：fold down 折向下 | fold up 垮台 | fold 折

verb

1. become folded or folded up

e.g. The bed folds in a jiffy

Synonym: fold

2. bend or lay so that one part covers the other

e.g. fold up the newspaper
turn up your collar

Synonym: foldturn up