Nack
abbr. 否定应答（Negative Acknowledgement）
🗣️ 情景例句
Your real education doesn't start until you get out into the real world.
直到你踏入现实社会，你才真正开始学习。
Whom will you show?
你将给谁看呢？
I'm On your side.
我全力支持你。