Fluorosurfactant
[化] 含氟表面活性剂
🗣️ 情景例句
Thanks, Mom.
谢谢 ，妈妈。
He who fears being conquered is sure of defeat.
怕吃败仗的就要打败仗。
Why? English is the first language in none of these countries.
为什么？在这些国家中英语都不是第一语言。