间不容息 is an idiom
间不容息jiàn bù róng xī
间：中间；容：容纳；息：喘息。中间都不容喘一口气。形容时机紧迫，不容延误。
Origin 《文子·道原》：“时之变则间不容息，先之则太过，后之则不及。”
Word breakdown for “间不容息”: Open in Reader →
间間HSK 1top 2kAmong the 2,000 most common words 1.between2.among3.within a definite time or space4.room+2 more+3 more 间間top 2kAmong the 2,000 most common words 1.gap2.to separate3.to thin out (seedlings)4.to sow discontent+1 more 1.must not2.cannot3.to not allow4.cannot tolerate+1 more 1.breath2.news3.interest (on an investment or loan)4.to cease+3 more+4 more