Substituent
高中 Senior Highn. 取代基, 代替物\\na. 取代基的, 代替物的
🗣️ 情景例句
Hey, Xiao Lu, what's up?
嘿，小陆，你好啊？
They had excepted me to go with them.
他们原本希望我和他们一起去。
Haven't you met yet?
你们还没见面吗？