Sulfonic
a. 磺酸基的\\n[医] 磺[基]的
🗣️ 情景例句
Trees, grass.
有绿树 ，有草地。
Not bad.
不赖嘛！
'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。