drop out /ˌdrɑpˈaʊt/
掉落,掉出;退出,退學
drop out
v 1: give up in the face of defeat of lacking hope; admit defeat;
"In the second round, the challenger gave up" [syn: give
up, fall by the wayside, drop by the wayside, throw
in, throw in the towel, quit, chuck up the sponge]
[ant: enter]
2: leave school or an educational program prematurely; "Many
students drop out because they are not prepared for our
challenging program"