Fluorodinitrobenzene
氟二硝基苯
🗣️ 情景例句
Sign here, where I've indicated.
签在这里，在我指的地方。
Custom makes all things easy.
若照习惯办，万事皆不难。
My old friend, Harrison, had lived in the Mediterranean for many years before he returned to England.
我的老朋友哈里森在回到英国以前曾多年居住在地中海地区。