嘻笑

例句：

1. 1. She gave a warm smile tothe new teacher.
   她对新老师露出了温暖的微笑。
2. 2. He smiled at her and saidhello.
   他对她笑了笑并打了招呼。
3. 3.The children were giggling with laughterat their own jokes.
   孩子们因为自己的笑话而咯咯地笑。