合情合理的英文：
reasonable and fair

参考例句：

She's perfectly reasonable in her demands.
她的要求完全合情合理.

His explanation sounds reasonable.
他解释得听起来合情合理.

All these things that you call witchcraft are capable of a natural explanation
被你们统统叫做巫术的那些东西都可以得到合情合理的解释。

It is further justified with the knowledge of the illness of Ms. Wang' s father.
而获悉王小姐父亲的病情使之显得更加合情合理。

Used to encourage sb to be sensible or reasonable,or to rebuke sb slightly
用以鼓励某人使之理智或合情合理或用以轻责某人)

If fair and reasonable measures are taken, they will help eliminate flash points and stabilize the world situation.
假如能够采取合情合理的办法，就可以消除爆发点，稳定国际局势。

Bankers also say the increased cost of long-term debt is justified when it provides breathing space in a crunch.
银行家们也认为，关键时刻，长期债务能产生一个可供喘息的机会，所以提高长期债务成本合情合理。

Comrade Hu Yaobang's case has been handled reasonably, or quite gently I should say, and it was settled very smoothly.
我们对胡耀邦同志问题的处理是合情合理的，可以说是处理得非常温和，问题解决得也很顺利。

reasonable是什么意思：
adj. 公平的，明智的；合理的；价钱公道的；不错的

The authority is not reasonable.
这个判例并不合理。

Reasonably adv.
适度地。

This is a potent reason.
这是一个令人信服的理由。

Is this a reasonable postulate?
这是不是一个合理的假设？

A reason to start over new, and the reason is you.
一个让自己重新开始的理由，而这个理由就是你。

fair是什么意思：
adj. 公正的；公平的；合理的；白皙的；晴朗的；美丽的
adv. 公平地，公正地；正面地，直接地；清楚地
n. 美人；美好的事物；集市；交易会，展览会；博览会
v. 转晴

They are going to the fair.
他们正在到集市上去。

Welcome you to the fair.
欢迎您到交易会来。

His knowledge of English is fair.
他的英语水平尚可。

hold a fair to raise money
举办义卖会筹款

The elections were free and fair.
选举是自由公正的。