Alkyle
[医] 烃基化物
🗣️ 情景例句
How is your language ability?
你的语言能力如何？
In the crowd, Sam looked aside to avoid seeing her.
在人潮中，萨姆把头转向旁边，免得和她目光相对。
The guards couldn't have been watchig very carefully.
警卫不可能一直认真地查看。