不准 bù zhǔn

ㄅㄨˋ ㄓㄨㄣˇ

HSK 7-9core 10k

1not to allow

2to forbid

3to prohibit

zuǐ嘴lǐ里yǒu有dōng xi东西de的shí hou时候bù zhǔn不准shuō huà说话。

嘴里有东西的时候不准说话。

You must not speak with your mouth full.

学生不准进入这个房间。

No student is allowed to enter the room.

谁也说不准实际上将会发生什么事。

What will actually happen is anyone's guess.