agonize

Investors often agonize over the timing of when to sell their stocks during a market crash.

(Chinese) 投资者在市场崩溃期间往往会为何时卖出股票而苦苦思索。

She spent the entire weekend agonizing over whether to tell her friend the truth.

(Chinese) 她整个周末都在为是否告诉朋友真相而痛苦挣扎。