连轴转

連軸轉
liánzhóuzhuàn
(coll.) to work non-stop; to work around the clock

CEDICT

colloquial

Entry Composition

1 连 lián
  1. to link
  2. to join
  3. to connect
  4. continuously
  5. in succession
  6. including
  7. (used with 也 yě, 都 dōu etc) even
  8. company (military)
2 轴 zhóu
  1. axis
  2. axle
  3. spool (for thread)
  4. roller (for scrolls)
  5. classifier for calligraphy rolls etc
3 转 zhuàn
  1. to revolve
  2. to turn
  3. to circle about
  4. to walk about
  5. classifier for revolutions (per minute etc): revs, rpm
  6. classifier for repeated actions