alert data

例句：

1. 1. The police were alerted to the danger of a gas leak.
   警方被警告了气体泄漏的危险。
2. 2. She was alerted by her phone when it rang.
   她的手机响了，她被提醒了。
3. 3. The doctor gave us all an alert about the possibility of infection.
   医生给了我们所有人关于感染可能性的警告。