Confusion reigned in the office after the sudden change to the payroll system.

薪資系統突然更改後，辦公室裡一片混亂。

During the holiday rush, chaos reigned at the shipping warehouse for two weeks.

假期旺季期間，出貨倉庫亂成一團長達兩週。

Optimism reigns among investors now that quarterly profits have exceeded expectations.

由於季度獲利超出預期，投資人之間普遍瀰漫著樂觀氣氛。