mourn

Thousands of people gathered in the city square to mourn the passing of their national hero.

(Chinese) 成千上万的人聚集在城市广场，哀悼他们民族英雄的逝世。

It is natural to mourn the loss of a close friend for a long time after they are gone.

(Chinese) 在好朋友去世后，长时间哀悼这种失去是很自然的。