Substituent
高中 Senior Highn. 取代基, 代替物\\na. 取代基的, 代替物的
??? 情景例句
who really needs to be wearing a tuxedo,
真正需要穿燕尾服的人，
He hesitated at nothing.
他對任何事都不會猶豫不決。
We'd like to clear up some points connected with the technical part of the contract.
我們希望搞清楚有關合同中技術方面的幾個問題。