You have to control your face. That's all.

你必须控制你的面部表情。就是这样。

Think about when you are talking to somebody, you meet them for the first time, now any good poker player will tell you that it is very easy to control your face.

试想一下，当你与某说话时，你们是初次见面，任何一个优秀的牌手都会告诉你，控制自己的表情其实非常容易。

She noticed how thin his hand was, it was a fine hand, slender, with long fingers, but now it was nothing but skin and bone; it trembled a little: he could control his face, but his hand betrayed him.

她注意到他的手是多么的纤细， 那是一只纤细的手，纤细的，手指修长，但现在却只剩下皮肤和骨头；它微微颤抖：他可以控制自己的脸， 但他的手出卖了他。