你放了个响屁，然后开始咯咯笑。

You passed wind rather loudly and started chuckling.

youdao

然后警官们开始咯咯笑。最后，当他们意识到这人横竖不打算走了，就突然爆发出一阵大笑。

Then the officers chuckled and let out an unexpected laugh when they realized the man wasn't going away.

youdao

一开始表弟感到很不是滋味，然后他转身问他们笑什么。

At first he started to get really upset, but then he turned around and asked them why they were laughing.

youdao

The baby is being approached, goes like this , smiles like this , and then the aversion .

有人走近这个婴儿，像这样，眉毛上挑凝视，开始微笑，像这样笑，大笑头偏向左，然后是讨厌的人，大笑头避开。

耶鲁公开课 - 心理学导论课程节选