early warning的用法和樣例：
例句
用作名詞 (n.)
- Basic early warning systems are being set up in the affected areas.
受災地區將會安裝預警系統。 - Don't worry, we have a tsunami early warning system.
別擔心，我們有海嘯預警系統。
辭彙搭配
- early warning system 預先警報系統...
