microexpression
美
英 
例句
If she'd seen my microexpression, she would have seen concealed signs of fear on my face.
如果她看了我脸上细微的表情,她会看出我脸上有隐藏恐惧的征兆。
What, you didn't see the microexpression he flashed?
怎么你没看到他脸上闪过的微表情吗
It's what we call a "microexpression. "
这就是我们所说的“微表情”。