Security staff must maintain vigilance at the warehouse entrance during overnight shipping operations.

夜間出貨作業期間，保全人員必須在倉庫入口保持警覺。

The finance team's vigilance helped detect several suspicious transactions before the quarterly audit.

財務團隊的警覺讓他們在季度稽核前就發現了幾筆可疑交易。

Please exercise vigilance when opening email attachments from unknown senders this week.

本週開啟來自不明寄件者的電子郵件附件時，請提高警覺。