run in

n. 试车, 飞机向目标的飞行, 插入部分, 争论, 顺便访问

例句与用法：

Don't drive your new car too fast until you've run it in.

新汽车未经磨合运转不要开得太快。

His parents expected him to be a teacher: the tradition seemed to run in the family.

他父母希望他成为一名教师; 这似乎是他们家的传统。

The Grand National will be run in spite of the bad weather.

尽管天气不好，一年一度的全国大马赛仍将举行。

He was run in for drunk and disorderly behaviour.

他因酗酒滋事而被拘留。

详细释义：

1. 对……试车

I'm running my new car in.

我正在试开我的新车。

2. 逮捕

He was run in for being in possession of drugs.

他因藏有毒品而被捕。