闭

闭上

bì shang

to close

闭上嘴巴

bì shang zuǐ bā

Shut up!

闭元音

bì yuán yīn

close vowel

闭包

bì bāo

closure (math.)

闭区间

bì qū jiān

closed interval (in calculus)

闭卷考试

bì juàn kǎo shì

closed-book examination

闭口不言

bì kǒu bù yán

to keep silent (idiom)

闭口不谈

bì kǒu bù tán

to refuse to say anything about (idiom)

闭合

bì hé

to close by coming together (like the lips of a wound, the doors of an elevator, the walls of a channel)

闭嘴

bì zuǐ

same as 閉上嘴巴|闭上嘴巴

闭域

bì yù

closed domain

闭塞

bì sè

to stop up