Definition
to comprehend the motives behind someone's actions
理解某人的行为
I spent weeks trying to work her out.
我花了几个星期试着搞清楚她的行为原因。
He is always so mysterious; I can't work him out.
他总是那么神秘；我搞不懂他。
By observing his behavior, I began to work him out and understand why he was so anxious.
通过观察他的行为，我开始了解他并明白他为什么如此焦虑。