Anthralin
[化] 地蒽酚; 蒽林
🗣️ 情景例句
She said she'll call you later.
她说她等会儿给你电话。
When the accident happened, I was having dinner.
当意外事故发生时候，我在吃晚餐。
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951;
这个频率是空间氢原子释放的自然频率，是在1951年被人类发现的。