人情世故

He felt people were contemptuous of his lack of sophistication.

觉得人们看懂人情世故。

He's very young and inexperienced, and doesn't know about the ways of the world.

还很年轻, 又缺乏经验, 懂得人情世故。

She is unschooled in the way of the world.

她懂人情世故；她丝毫懂世态炎凉。