四大盆地

sìdàpéndì
four great basin depressions of China, namely: Tarim 塔里木盆地 in south Xinjiang, Jungar 准葛尔盆地 and Tsaidam or Qaidam 柴达木盆地 in north Xinjiang Sichuan 四川盆地

CEDICT

Entry Composition

1 四大 sìdà
  1. the four elements: earth, water, fire, and wind (Buddhism)
  2. the four freedoms: speaking out freely, airing views fully, holding great debates, and writing big-character posters, 大鸣大放 dàmíngdàfàng, 大辩论 dàbiànlùn, 大字报 dàzìbào (PRC)
2 盆地 péndì
  1. (geography) basin
  2. depression