三月女王Amanda
最好用reasonable，价格合理，问题合理，推理合理都可以。当然用proper也可以，不过一般偏向于表示恰当，就本人理解proper有reasonable+medium的意思
街头流浪泡泡
reasonable。
合理 [hé lǐ]：合乎道理或事理。
例句：1，他说的话很合理。
What he says is very reasonable.
2，这事不合理。
This affair is unreasonable.
3，该计划的主要内容是支出的缩减和政府控制的合理化改革。
The main lines of the plan were a reduction in expenditure and the rationalization ofgovernment controls.
4，小镇已经安装了合理的污水处理系统。
The town has already put in a proper sewerage system.
5，医生向他的合理要求让步了，允许他工作。
As a concession to his reasonable demand, the doctor allowed him to work
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