不能(bù néng) - cannot, must not (prohibition or incapacity) in Mandarin

你nǐ不bù能néng在zài这zhè里lǐ停tíng车chē。

You cannot park here.

我wǒ最zuì近jìn身shēn体tǐ不bù好hǎo，不bù能néng喝hē酒jiǔ。

My health has not been good recently; I cannot drink alcohol.

这zhè件jiàn事shì不bù能néng告gào诉sù别bié人rén。

This matter cannot be told to others.

你nǐ不bù能néng在zài这zhè里lǐ抽chōu烟yān。

You cannot smoke here.

我wǒ不bù能néng告gào诉sù你nǐ答dá案àn。

I cannot tell you the answer.