Defluorination
[化] 脱氟作用
🗣️ 情景例句
Are you ready for this?
想听着。
That's an exaggeration!
太夸张了吧！
'He had travelled only seven miles across the Channel when his engine failed and he was forced to land on sea.
但他只在海峡上空飞行7英里，引擎就发生了故障，他只好降落在海面上。