She had sharp, knowing eyes that missed nothing and a studiedly stupid look on her face.

她有一双尖利而懂事的、不会漏掉任何东西的眼睛，脸上却故意装出一副傻相。

One coughed, and they looked studiedly away from her, stumbling over some new conversational platitude.

一个人咳嗽了一声，他们仔细地把目光从她身上移开，结结巴巴地谈论着一些新的陈词滥调。