Chinese

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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

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Idiom

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必不可少

  1. essential; indispensable