take turns

1.Matters have taken a bad turn.

事情恶化。

2.The event took an explosive turn.

事态起了急剧变化。

3.At summer picnics,there is often an informal baseball game.Boys and girls,the young and the old,take turns to bate.Each team has 9 plyers.

夏日夜餐时，经常有非正式的棒球比。男孩女孩，年轻的年老的，都会轮流比。每个队有9个球员。

4.After laying down my pen, I took several turns in a berceau, or covered walk of acacias, which commands a prospect of the country, the lake, and the mountains.

我放下了笔，在金合欢树荫盖的步道上走了几个来回。从那里可看见田野、湖水和远山。