Polyfluoride
多氟化物
🗣️ 情景例句
I think I want to study journalism
我想学新闻学
Think much, speak little, and write less.
勤思考，寡发言，少落笔。
He noticed the remains of a snake which was wound round the electric wires of a 16,000-volt power line.
他发现了缠绕在16，000伏高压线上的一条死蛇。