reasonable

adj. 合理的，公道的；通情达理的

中文词源

reasonable 合理的

来自 reason,理由，-able,形容词后缀。

reasonable (adj.): c. 1300, "having sound judgment, sane, rational," from Old French raisonable, from Latin rationabilis, from ratio (see reason (n.)).
What the majority of people consider to be 'reasonable' is that about which there is agreement, if not among all, at least among a substantial number of people; 'reasonable' for most people, has nothing to do with reason, but with consensus. [Erich Fromm, "The Heart of Man," 1968]
Meaning "moderate in price" is recorded from 1660s. Related: Reasonably.

1. They will need a reasonable amount of desk area and good light.: 他们将需要一个面积较大的摆放办公桌的地方和充足的照明。

2. It seems clear that he has no reasonable alternative.: 他没有其他合适的选择，这一点似乎很清楚。

4. Only a third of these households thought it reasonable to meter water.: 这些家庭当中只有三分之一认为用水表计量是合理的。

5. Teachers can only be expected to do what is reasonable and practicable.: 教师只应该做合情合理而且切实可行的事。