1 a single slip may cause everlasting sorrow (idiom)
一字千金
yī zì qiān jīn
1 one word worth a thousand in gold (idiom)
2 (in praise of a piece of writing or calligraphy) each character is perfect
3 each word is highly valued
一掷千金
yī zhì qiān jīn
1 lit. stake a thousand pieces of gold on one throw (idiom); to throw away money recklessly
2 extravagant
一日千里
yī rì qiān lǐ
1 lit. one day, a thousand miles (idiom); rapid progress
一落千丈
yī luò qiān zhàng
1 lit. to drop a thousand zhang in one fall (idiom)
2 fig. (of business, popularity etc) to suffer a sudden, devastating decline
3 to take a dive
一言千金
yī yán qiān jīn
1 one word worth a thousand in gold (idiom); valuable advice
2 words of enormous weight
一诺千金
yī nuò qiān jīn
1 a promise worth one thousand in gold (idiom); a promise that must be kept
亘古不变
gèn gǔ bù biàn
1 unchanging since times immemorial (idiom)
2 unalterable
3 unvarying
4 monotonous
人心不古
rén xīn bù gǔ
1 the men of today are sadly degenerated (idiom)
借古讽今
jiè gǔ fěng jīn
1 to use the past to disparage the present (idiom)
前不见古人,后不见来者
qián bù jiàn gǔ rén , hòu bù jiàn lái zhě
1 unique
2 unprecedented (idiom)
千依百顺
qiān yī bǎi shùn
1 totally submissive (idiom)
千千万万
qiān qiān wàn wàn
1 lit. by the thousands and tens of thousands (idiom); untold numbers
2 innumerable
3 thousands upon thousands
千古罪人
qiān gǔ zuì rén
1 sb condemned by history (idiom)
千古遗恨
qiān gǔ yí hèn
1 to have eternal regrets (idiom)
千奇百怪
qiān qí bǎi guài
1 fantastic oddities of every description (idiom)
千姿百态
qiān zī bǎi tài
1 in different poses and with different expressions
2 in thousands of postures (idiom)
千家万户
qiān jiā wàn hù
1 every family (idiom)
千虑一失
qiān lu:4 yī shī
1 reflect a thousand times and you can still make a mistake (idiom); to err is human
千虑一得
qiān lu:4 yī dé
1 a thousand tries leads to one success (idiom, humble expr.); Even without any notable ability on my part, I may still get it right sometimes by good luck.