Word: 不知 (bùzhī)

一家不知一家事

yìjiā bùzhī yìjiā shì

one household doesn't know another household's affairs

上明不知下暗

shàng míng bùzhī xià àn

those above, though enlightened, don't know the darkness below

不到西天，不知佛大小

búdào xītiān, bùzhī fó dàxiǎo

until you reach the Western Heaven, you don't know how big the Buddha is

不尝苦中苦，不知甜中甜

bù cháng kǔ zhōng kǔ, bùzhī tián zhōng tián

without tasting the bitterest bitter, you won't know the sweetest sweet

不当家不知柴米贵，不养儿不知父母恩

bùdāngjiābùzhīcháimǐguì, bù yǎngr bùzhī fùmǔ ēn

if you don't run a household you don't know how dear firewood and rice are; if you don't raise a child you don't know your parents' kindness

不患人不知，单怕不知人

bú huàn rén bùzhī, dān pà bùzhī rén

don't worry that others don't know you; only fear that you don't know others

不知作者在说什么。

Bùzhī zuòzhě zài shuō shénme.

It is not clear what the writer is trying to say.

不知怎么我总是没心情工作。

Bùzhī zěnme wǒ zǒngshì méi xīnqíng gōngzuò.

For some reason or other I cannot bring myself to work.

不知者不怪罪

bùzhīzhě bú guàizuì

one who didn't know is not blamed

不行，今天不知为何没有干劲。

Bùxíng, jīntiān bùzhī wèihé méiyǒu gànjìn.

It's useless, I'm not motivated today for some reason.

东家不知西家苦，南家不知北家难

dōngjiā bùzhī xī jiā kǔ, Nán jiā bùzhī běi jiā nán

the east house doesn't know the west house's bitterness; the south house doesn't know the north house's hardship

书到用时方恨少，事非经过不知难

shū dào yòng shí fāng hèn shǎo, shì fēi jīngguò bùzhī nán

only when you need books do you regret having read too few; you don't know a task is hard until you've done it

事非经过不知难

shì fēi jīngguò bùzhī nán

unless you've been through something, you don't know how hard it is

人不知自丑，马不知脸长

rén bùzhī zì chǒu, mǎ bùzhī liǎn cháng

people don't know their own ugliness, horses don't know their faces are long

今日不知明日事

jīnrì bùzhī míngrì shì

today you don't know tomorrow's affairs

他好像对此全不知清。

Tā hǎoxiàng duì cǐ quán bùzhī qīng.

He seems like he doesn't understand this at all.

关公放屁，不知脸红

Guāngōng fàngpì, bùzhī liǎnhóng

Guan Gong farts: doesn't know to blush

几个胖子一块儿进门，不知谁让谁

jǐ ge pàngzi yíkuàir jìnmén, bùzhī shéi ràng shéi

several fat men go through a door together: no one knows who should give way to whom

半夜摸黄瓜，不知头尾

bànyè mō huángguā, bùzhī tóuwěi

groping for a cucumber at midnight: can't tell the head from the tail

半夜里吃黄瓜，不知头尾

bànyè li chī huángguā, bùzhī tóuwěi

eating a cucumber in the middle of the night: not knowing head from tail

哈巴狗咬月亮，不知自己有多高

hǎbāgǒu yǎo yuèliang, bùzhī zìjǐ yǒu duō gāo

a pug biting at the moon: it doesn't know how high it is

囫囵吞枣，不知酸甜

húlúntūnzǎo, bùzhī suāntián

swallowing a jujube whole: not knowing whether it is sour or sweet

在家不知出门苦

zàijiā bùzhī chūmén kǔ

at home you don't know the hardship of going out

外明不知里暗

wài míng bùzhī lǐ àn

outside bright, you don't know inside dark

她不知如何回答。

Tā bùzhī rúhé huídá.

She was at a loss for an answer.

少年不知勤学苦，老来方知读书迟

shàonián bùzhī qínxué kǔ, lǎo lái fāngzhī dúshū chí

in youth one doesn't know the hardship of diligent study; only in old age does one know reading started late

引擎不知哪里发生了故障。

Yǐnqíng bùzhī nǎlǐ fāshēngle gùzhàng.

Something is wrong with the engine.

我想帮他，但不知如何。

Wǒ xiǎng bāng tā, dàn bùzhī rúhé.

I'd like to help him, but I don't know how.

我的手表不知放到哪里去了。

Wǒ de shǒubiǎo bùzhī fàng dào nǎlǐ qùle.

I can't find my watch.

打昏了的公鸡,不知早晚

dǎ hūnle de gōngjī,bùzhī zǎowǎn

a rooster knocked dizzy: doesn't know morning from evening

望乡台上打莲花落，不知死的鬼

wàngxiāngtái shang dǎliánhuālào, bùzhī sǐ de guǐ

singing lotus-blossom ballads on the Terrace for Viewing Home: a ghost who doesn't know he's dead

欲人不知，莫若不为；欲人不闻，莫若不言

yù rén bùzhī, mò ruò bù wéi; yù rén bù wén, mò ruò bù yán

if you don't want people to know, better not do it; if you don't want people to hear, better not say it

海枯终见底，人死不知心

hǎi kū zhōng jiàn dǐ, rén sǐ bùzhī xīn

when the sea dries up you finally see the bottom; when a person dies you still don't know their heart

狗的听觉比人类灵敏不知多少倍。

Gǒu de tīngjué bǐ rénlèi língmǐn bùzhī duōshǎo bèi.

The hearing acuity of dogs is superior by far to that of humans.

猪八戒吃人参果，全不知滋味儿

zhūbājiè chī rénshēnguǒ, quán bùzhī zī wèir

Pigsy eats a ginseng fruit: has no idea of the taste at all

瞎子挤到三岔口,不知该走哪条路

xiāzi jǐ dào Sānchàkǒu,bùzhī gāi zǒu nǎ tiáo lù

a blind man pushing into a three-way junction: not knowing which road to take

瞎子照镜子,不知自己是什么样子

xiāzi zhàojìngzi,bùzhī zìjǐ shì shénme yàngzi

a blind man looking in a mirror: doesn't know what he looks like

穿冬衣戴夏帽,不知春秋

chuān dōngyī dài xià mào,bùzhī chūnqiū

wearing winter clothes with a summer hat: doesn't know spring and autumn

笼子里的斑鸠，不知春秋

lóngzi lǐ de bānjiū, bùzhī chūnqiū

a turtledove in a cage: doesn't know spring from autumn

箭头虽利，不射不发；人虽聪明，不学不知

jiàntóu suī lì, bú shè bù fā; rén suī cōngming, bù xué bùzhī

an arrowhead, however sharp, doesn't fly unless shot; a person, however clever, doesn't know without learning

腊月里卖镰刀,知冬不知夏

làyuè li mài liándāo,zhī dōng bùzhī xià

Selling sickles in the twelfth month: knows winter, not summer

节令不到，不知冷暖；人不相处，不知厚薄

jiélìng búdào, bùzhī lěngnuǎn; rén bù xiāngchǔ, bùzhī hòubó

until the season arrives you don't know cold or warm; until people spend time together you don't know how warm or cool they are

蛤蟆跳到秤盘里，不知自己有几两肉

háma tiào dào chèngpán li, bùzhī zìjǐ yǒu jǐ liǎng ròu

a toad jumping onto a scale pan: doesn't know how many ounces of flesh it has

要是不知道路的话去问警察吧。

Yàoshi bùzhī dàolù dehuà qù wèn jǐngchá ba.

If you don't know the way, ask a policeman.

马上不知马下苦，饱汉不知饿汉饥

mǎshàng bùzhī mǎ xià kǔ, bǎohànbùzhī'èhànjī

The one on horseback doesn't know the hardship of the one on foot; the well-fed doesn't know the hunger of the starving

马不知自己脸长，牛不知自己角弯

mǎ bùzhī zìjǐ liǎn cháng, niú bùzhī zìjǐ jiǎo wān

A horse doesn't know its face is long; an ox doesn't know its horns are curved

马背上吃猪蹄，不知这把骨头扔到哪里

mǎbèi shang chī zhūtí, bùzhī zhè bǎ gǔtou rēng dào nǎlǐ

Eating pig's trotters on horseback: who knows where these bones will be thrown

骑在驴背上吃烧鸡，不知这把骨头扔在哪

qí zài lǘ bèi shang chī shāo jī, bùzhī zhè bǎ gǔtou rēng zài nǎ

eating roast chicken on a donkey's back: not knowing where to throw this handful of bones

骑驴的不知赶脚苦

qí lǘ de bùzhī gǎnjiǎo kǔ

the one riding the donkey doesn't know the driver's hardship

鸡肚不知鸭肚事

jī dù bùzhī yā dù shì

the chicken's belly doesn't know the duck's belly's business