The common abbreviation is "kr".

一般缩写为“kr”。

KR: Today it is very difficult to say.

今天很难讲，我们没有跑很多圈。

KR: you only know when you finish the race.

只有比赛结束了你才能知道。

KR: Of course, I didn't want to get into that.

当然我不想卷入那个缠斗。

KR: I don't know really, it's too early to say.

我不知道，现在说这些还太早。