early warning

• n. 预警

例句

用作名词 (n.)

1. Basic early warning systems are being set up in the affected areas.
   受灾地区将会安装预警系统。
2. Don't worry, we have a tsunami early warning system.
   别担心，我们有海啸预警系统。

词汇搭配

• early warning system 预先警报系统...