vi.1.(from competition, race)退出
She dropped out after 20 kilometres.20公里之后, 她退出了比赛。
In time, many competitors drop out.最终, 许多竞争者退出了。
2.(from college, university)退学
Fifty per cent of students drop out.50%的学生退学。
to drop out of school退学
He'd dropped out of high school at the age of 16.他16岁时从高中退学。
3.(from society)隐退；离弃世俗社会
She encourages people to keep their jobs rather than dropping out to live in a commune.她鼓励人们坚持工作, 而不是离经叛道地去过公社生活。