Warner
n. 警告者, 告诫者, 预告者\\n[化] 报警器
✅ 同义词
🗣️ 情景例句
Please do the work at your own convenience.
请在方便时把这事做一做。
I read 10 lettres.
我读了十封信。
It was the idea of supporting a craft on a 'pad',or cushion, of low-pressure air, ringed with a curtain of higher pressure air.
用一个气垫来支撑船体，低压空或软垫，软垫周围用高压空气环绕。