contemptuously

He laughed contemptuously when his opponent suggested they should work together on the project.

(Chinese) 当对手建议他们在项目上合作时，他轻蔑地笑了起来。

The critic spoke contemptuously of the film, calling it a waste of time and money.

(Chinese) 影评人蔑视地谈论这部电影，称其浪费时间和金钱。