The IT department warned employees not to open attachments from unknown senders.

資訊部門警告員工不要開啟來自不明寄件者的附件。

Our shipping partner warned us that the storm could delay deliveries by two days.

我們的貨運合作夥伴提醒我們，暴風雨可能使貨物延遲兩天送達。

The flight attendant warned passengers to keep their seatbelts fastened during the turbulence.

空服員提醒乘客在亂流期間繫好安全帶。