alert
「alert」的意思
adj. 警惕的，警觉的；机敏的，敏捷的；意识到，注意到（alert to）; v. 向……报警，使...
adj.提防的,警惕的n.警惕,警报
「alert」的用法
alert警告 - 在程序中使用alert函数可以向用户显示警告信息。
「alert」的例句
The system will alert you if there is an error.
如果系统检测到错误，会向你发出警告。
Alert the police if you see something suspicious.
如果你看到可疑情况，请向警察报警。
The app will alert you when a new update is available.
当有新更新可用时，应用会向你发出通知。
Alert the authorities immediately if there is a fire.
如果发生火灾，请立即报警。
The alarm will alert you if someone tries to enter your house without permission.
如果有人未经允许进入你的房子，警报会向你发出警报。
Alert your friends if you are going on a trip.
如果你要出门旅行，请告诉你的朋友。
The system will alert you if there is a network outage.
如果网络出现故障，系统会向你发出警告。
Alert the teacher if you have any questions in class.
如果有任何问题，请在课堂上向老师提问。
Alert the authorities immediately if there is a medical emergency.
如果有医疗紧急情况，请立即报警。
The app will alert you if there is an incoming call or message.
当有来电或短信时，应用会向你发出通知。