讲理的英文：
discuss the merits of an argument

参考例句：

I've got a bone to pick with you.Where's the money I lent you last week?
我得跟你讲讲理,上星期我借给你的钱到哪里去了？

You'd better reason things out with him calmly.
你最好心平气和地和他讲理。

There is no reasoning with such a stubborn man as Peter.
跟彼得这种固执的人讲理简直是不可能的事。

There is no reasoning with such a stubborn man as Peter.
跟彼得这种固执的人讲理简直是不可能的事。

discuss是什么意思：
v. 讨论，谈论，商量；详述，论述

Stop discussing for the moment, please.
请暂停讨论。

They discussed the weather and other topics.
他们讨论了气候和其他的话题。

The discussion deteriorated into a bitter quarrel.
这场讨论演变成了激烈的争吵。

merits是什么意思：
n. 价值；长处，优点；功过
v. 值得，应受

The contention is without merit.
这一论点没有法律依据。

merit reward, praise, punishment, etc
应获得奖励、 称赞、 处罚等

Her singing is totally without merit.
她的演唱一无是处。

argument是什么意思：
n. 争论，辩论；论证；论据

This is the argument of the school.
这就是流行学派的论据。

This is a feeble argument.
这是一场无益的争执。

Disconnection between grounds of argument and proposition of argument
论据和论题不相干