形容词合理的，公道的; 明白道理的; 适当的; 有理性的

形容词fairsensiblepracticalsanejustifiablerationalrealisticlogicaljustsound

形容词unreasonable

形容词

1. Our mother was always very reasonable.
我们的母亲总是非常通情达理。

1. （人）公平的，明智的，理智的，有判断力的
If you think that someone is fair and sensible you can say that they are reasonable.

e.g. He's a reasonable sort of chap...
他是个理智的家伙。
e.g. Oh, come on, be reasonable.
噢，好了，理智一点。