Dianthracene
双蒽
🗣️ 情景例句
Take off the veil,
拿掉面纱
We have some reports to show you for background information.
我们还有一些报告向你介绍背景资料。
Sure enough, a policeman arrived on the scene and politely asked the workmen to go away.
果然，警察来了，不礼貌地请工人离开此地；