Anthanthrene
[化] 二苯并[cd,jk]芘
🗣️ 情景例句
It's Linda from the animal shelter.
是动物收容所的Linda。
Which one is cheaper?
哪一个是较便宜的？
'Cats behave like well-trained paratroopers.' a doctor said.
“猫就像训练有素的跳伞队员，” 一位医生说。