听到这个滑稽的笑话，他忍不住咯咯地笑了起来。

He couldn't help but ___chortle when he heard the funny joke.

当她看到自己赢得了比赛时，忍不住发出了得意的咯咯笑声。

She couldn't help but let out a triumphant ___chortle when she saw she had won the game.