S-15：split hairs 过于计较

A:My mother likes to split hairs.

A:我妈妈太过于计较了。

B:What do you mean by that?

B：你这话是什么意思?

A:She's keen to buy something which is much cheaper.

A:她喜欢买更便宜的东西。

B:Mothers are like that.

B：母亲都是这样。