roll-up的英文翻译是什么意思，词典释义与在线翻译
动词 roll up:- form into a cylinder by rolling
- get or gather together
- arrive in a vehicle: "He rolled up in a black Mercedes"
- make into a bundle
- close (a car window) by causing it to move up, as with a handle
- form a cylinder by rolling
- show certain properties when being rolled
