上一次当，学一次乖
shàng​yī​cì​dàng​xué​yī​cì​guāi

once bitten, twice shy

  1. 上 shàng particleverb
    to apply
    to put on; to paint; to fix or install; to screw or wind up
  2. 一次 yī​cì numeral
    once
    one time; for the first time
  3. 当 當 dàng verb
    trick
    A trick; a snare; a trap
  4. ， xué
    non-Chinese
  5. 学 學 xué verb
    to study
    to study; to learn; to gain knowledge or skills
  6. 一次 yī​cì numeral
    once
    one time; for the first time
  7. 乖 guāi
    clever
    shrewd or alert; quick-witted, as in the phrase 学乖 xué​guāi meaning to learn from a mistake