English主要词典
undo
Universal Words
[VN]
1 to open sth that is fastened, tied or wrapped:
to undo a button / knot / zip * to undo a jacket / shirt / bag * I undid the package and took out the books.
OPPDOUP
2 to cancel the effect of sth:
He undid most of the good work of the previous manager. * It's not too late to try and undo some of the damage. * UNDO (= an editing command on a computer that cancels the previous action)
3 [usuallypassive] (formal) to make sb/sth fail:
The team was undone by the speed and strength of their opponents.
