Erythroxylin
古柯碱, 可卡因
🗣️ 情景例句
How about cleaning up a bit around here?
你是不是该把这儿收拾一下？
He has left already .
他已经离开了。
She walked slowly into the hall and at once noticed that all the room doors were open,
她慢慢地走进前厅，立即发现所有的房门都敞开着，