Analysts theorize that the sudden drop in sales was caused by the new competitor.

分析師推測，銷售額突然下滑是新競爭對手造成的。

During the meeting, the manager theorized that the shipping delay started at customs.

會議中，經理推測運送延誤是從海關開始的。

Some staff theorize that the hiring freeze will end after the merger is finalized.

有些員工猜想，合併案定案後，凍結招聘就會結束。