giggle

The children giggled when the puppy chased its tail. ▶

小狗追着自己的尾巴转，孩子们咯咯地笑了起来。

Young learners may giggle during unfamiliar activities, but this reaction does not necessarily indicate a lack of interest.

年幼的学习者进行不熟悉的活动时可能会咯咯笑，但这种反应不一定表明他们缺乏兴趣。