估计(形势);评估(某人的能力、品质)to form an opinion about someone's abilities and character or a situation by thinking about him, her, or it carefully
I weighed up my chances of escape, and decided to wait for a better moment. 估量了一下逃跑的胜算有多大后,我决定等待一个更好的时机。
When you're a detective you learn to weigh people up quickly. 如果你是个侦探,就得学会快速判断一个人。