The system sent an alert to all staff when the server went down this morning.

今天早上伺服器當機時，系統向全體員工發送了警示通知。

Passengers received a text alert that their flight to Tokyo had been delayed two hours.

乘客收到簡訊通知，得知飛往東京的班機延誤兩小時。

Our bank issued a fraud alert after noticing unusual charges on the company credit card.

我們的銀行發現公司信用卡有異常消費後，發出了盜刷警示。