The emperor did not turn a hair,“And yet I have never heard you mention that name.”

题目

The emperor did not turn a hair,“And yet I have never heard you mention that name.”
这是INVISIBLE CITIES里面的一段话,求翻译TURN A HAIR?

答案

not turn a hair的中文翻译：面不改色,镇定自若,毫不惊慌.