to fold up
[phrase form: fold]
01
折叠, 折起
to bend something to make it smaller or more compact
例子
He carefully folded up the letter before placing it in the envelope.
他小心地折好信，然后把它放进信封里。
When you're done with the map, fold it up neatly and return it to the glove compartment.
当你用完地图后，整齐地折叠起来并放回手套箱。
02
折叠, 缩小
to become smaller or more compact by bending or collapsing
例子
The map easily folds up when not in use.
地图在不使用时可以轻松折叠。
If you 're not careful, the umbrella can suddenly fold up in the wind.
如果你不小心，伞可能会在风中突然折叠起来。
