必不可少组成 bì bù kě shǎo zǔ chéng

DEFINITIONS

  1. absolute necessity
  2. sine qua non

CHARACTERS

必 bì
HSK 3
surely, most certainly; must
不 bù
HSK 1
no, not; un-; negative prefix
可 kě
HSK 2
may, can, -able; possibly
少 shǎo
HSK 1
few, less, inadequate
组 zǔ
HSK 5
class; section, department
成 chéng
HSK 3
completed, finished, fixed