不分昼夜

不分晝夜
bùfēnzhòuyè
  1. day and night
  2. round-the-clock

CEDICT

不论白天或晚上，表示动作的持续进行。

重編國語辭典

不论白天或晚上，表示动作的持续进行

維基詞典

Entry Composition

1 不分 bùfēn
  1. not to distinguish; to make no distinction
  2. (LGBT slang) versatile (open to either penetrative or receptive role)
2 昼夜 zhòuyè
  1. day and night
  2. period of 24 hours
  3. continuously, without stop

Related entries

卜昼卜夜 bǔzhòubǔyè day and night (to toil, to abandon oneself to pleasure etc)
日夜 rìyè
  1. day and night
  2. around the clock
她日夜想著這個。

She wants to do this day and night.

Source: Tatoeba

昼夜 zhòuyè
  1. day and night
  2. period of 24 hours
  3. continuously, without stop
这段时间昼夜温差很大。

There is a large temperature difference between day and night during this period of time.

Source: Tatoeba

没日没夜 méirìméiyè
  1. day and night
  2. regardless of the time of day or night
晨昏 chénhūn
  1. morning and twilight
  2. day and night
通宵达旦 tōngxiāodádàn
  1. overnight until daybreak (idiom); all night long
  2. day and night
全体销售人员通宵达旦地工作了一周。

The entire sales staff has worked around the clock for a week.

Source: Tatoeba