C2 合情合理；有分寸；有道理
within the limits of what is acceptable and possible
We can wear anything we like to the office, within reason. 只要不出格，我们在办公室可以爱穿什么就穿什么。
Spend whatever you need to spend, within reason.
We're willing to do anything within reason to ensure its success.
He'd do anything I asked - you know, anything within reason.
People should be allowed to do what they want, within reason.
You can have anything you like, within reason.
See also: reason noun (JUDGMENT)