discretion

n. 慎重,辨别力,考虑
[计算机] 判定

The hours of the meetings will be fixed at the monitor's discretion.

开会时间将由班长自行决定。

I won't tell you what time to leave, you're old enough to use your own discretion.

我不告诉你什么时候离开，你已经长大了，该自己作出决定。