Castine
[化] 牡荆碱
🗣️ 情景例句
How...?
你怎么……？
Are you going anywhere?
你打算上哪儿去玩？
Before you leave the lab, make sure the electricity is turned off and the windows are shut.
你们离开实验室前，务必要关上电源，关好窗户。