GbEng
主席一职由委员会的成员轮流担任。 The post of chairman rotates among members of the committee.
店员要轮流休息。 The shop assistants had to have their days off by turns.
学生们每天轮流打扫教室。 The students clean the classroom everyday in turn.
你们不能两人同时用这辆自行车--得轮流使用. You can't both use the bike at once you'll have to take turns.