Perhydroanthracene
蒽烷, 全氢化蒽
🗣️ 情景例句
Thank you.
谢谢 。
I think gray hair makes you look rather distinguished.
我觉得你灰白的头发使你看上去很严肃。
The sea journey lasted over sixty days and nights.
海上航行持续了60多个昼夜。