他什么也没说，只朝我狡黠地咧嘴一笑，令我感到极为不安。

He said nothing but gave me a sly grin that made me feel terribly uneasy.

《柯林斯英汉双解大词典》

杰克什么也没说，但是老师对他笑了笑，好像他做了一件很聪明的事。

Jack wasn't saying anything, but the teacher smiled at him as if he had done something very clever.

youdao

我心里一惊，也对他笑了笑。

With a shock at my heart, I smiled back.

youdao

I know you don't remember that far back, but in about the second lecture I made a joke of Professor Guttag which, you know, you didn't laugh at, he didn't laugh at, that's okay.

我知道你们可能不记得了，但是在大约是第二节课,我对Guttag开了个玩笑，你们懂得，你们没笑，他也没笑，这没什么。

麻省理工公开课 - 计算机科学及编程导论课程节选