Anthanthrone
[化] 二苯并[cd,jk]芘-5,10-二酮
🗣️ 情景例句
My boss is a slave driver.
我的老板指使我们像指使奴隶似的。
Falling leaves
落叶
Sorry! she said to the shopkeeper. I've forgotten my money!
“对不起！”她对售货员说，“我忘记带钱了！”