can 't help laughing
It's a Chinese idiom, the basic definition: when you see or hear something funny, you can't help laughing. Dumb.
Analysis of Idioms
I can't help laughing
Laugh and cry
The origin of Idioms
Zhao Ye, Han Dynasty: "Yu is dumb but smiling."
Idiom usage
I can't help laughing
Examples
Prince an Fangcun, in an instant, is full of emotions. He thinks that the ghost fox has been laughing for a long time, so he plays with it when he is drunk. It's better to wake up at the head of the bed. Pu Songling's strange tales from a lonely studio Wang Zian in Qing Dynasty
can 't help laughing
Shrug one's shoulders and bend one's back - sǒng jiān qū bèi
beautiful rivers and mountains of a country - dà hǎo hé shān
know and observe all but stay obscure - zhī bái shǒu hēi