Literally: Dirty, Dangerous and Difficult (or Demeaning) job.
3D job (plural 3D jobs)
- A menial blue-collar job often performed by migrants.
dirty, dangerous, difficult job
- Mandarin: ３K產業, ３K产业 (sān kèi chǎnyè), ３K行業, 3K行业 (sān kèi hángyè) (number ３ can also be replaced with 三 (sān) - "three")
- Japanese: ３Ｋ産業 (さんけいさんぎょう, san kei sangyō) (number ３ can also be replaced with 三 (さん, san) - "three")