高高低低

gāogāodīdī
  1. high and low
  2. uneven (in height)
  3. uneven (of ground)

CEDICT

Entry Composition

1 高 gāo
  1. high
  2. tall
  3. above average
  4. loud
  5. your (honorific)
2 高低 gāodī
  1. height; level; (music) pitch
  2. relative superiority
  3. propriety; discretion (usu. in the negative, e.g. 不知高低 bùzhīgāodī)
  4. no matter what; just; simply (will not ..., must ... etc)
  5. at long last
3 低 dī
  1. low
  2. beneath
  3. to lower (one's head)
  4. to let droop
  5. to hang down
  6. to incline

Related entries

不均 bùjūn
  1. uneven
  2. distributed unevenly
不平 bùpíng
  1. uneven
  2. injustice
  3. unfairness
  4. wrong
  5. grievance
  6. indignant
  7. dissatisfied
地面高低不平，給部隊前進帶來了困難。

The rugged terrain made the troops' advance difficult.

Source: Tatoeba

偨 cī uneven
傞 suō
  1. uneven
  2. unsteady (in dancing)
坑坎 kēngkǎn
  1. uneven (road)
  2. depression (in terrain)
㟥 cēn
  1. uneven
  2. not uniform
里出外进 lǐchūwàijìn
  1. uneven
  2. in disorder
  3. everything sticking out
参差不齐 cēncībùqí
  1. (idiom) variable
  2. uneven
  3. irregular
攲 qī
  1. up
  2. uneven
阑干 lángān
  1. (literary) crisscross
  2. uneven
  3. disorderly
  4. rim of the eye
  5. variant of 栏杆 lángān
陂 pō
  1. rugged
  2. uneven
七扭八歪 qīniǔbāwāi
  1. misshapen
  2. crooked
  3. uneven (idiom)
凹凸 āotū
  1. concave or convex
  2. bumps and holes
  3. uneven (surface)
  4. rugged
磊 lěi
  1. lumpy
  2. rock pile
  3. uneven
  4. fig. sincere
  5. open and honest
错落 cuòluò
  1. strewn at random
  2. disorderly
  3. untidy
  4. irregular
  5. uneven
参 cān
  1. to take part in
  2. to participate
  3. to join
  4. to attend
  5. to counsel
  6. unequal
  7. varied
  8. irregular
  9. uneven
  10. not uniform
  11. abbr. for 参议院 Senate, Upper House
谁也参不透。

Nobody can understand it.

Source: Tatoeba