take turns

动词 take turns:

1. do something in turns
   同义词：alternate

1. The children were taking turns on the slides in the playground.
   孩子们在操场上轮流滑滑梯。
2. Let's take turns at doing it.
   让我们轮流来做吧。
3. You can't both use the bike at once you'll have to take turns.
   你们不能两人同时用这辆自行车--得轮流使用。