Chinese edit

 
certainly; must; will
certainly; must; will; necessarily
not; no
 
can; may; able to
can; may; able to; certain(ly); to suit; (particle used for emphasis)
 
young; few; little
young; few; little; lack
simp. and trad.
(必不可少)

Pronunciation edit


Idiom edit

必不可少

  1. essential; indispensable