Nitrososubstitution
[医] 亚硝基取代[作用]
🗣️ 情景例句
Who's this?
你是谁？
Did you go play ball last night?
你昨晚去玩球了吗？
Yes. Did you listen to the weather report on the radio?
是的。你收听了电台的天气预报吗？