cynic

A true cynic believes that politicians only make promises to get elected, not to help the public.

(Chinese) 一个真正的愤世嫉俗者认为，政客许下诺言只是为了当选，而不是为了帮助公众。

Even the biggest cynic was moved to tears by the selfless bravery shown by the young rescuer.

(Chinese) 即使是最愤世嫉俗的人，也被这位年轻救援者表现出的无私勇气感动落泪。