crucial

a.关键的，决定性的

crotchety, crouch, croup, croupier, crouton, crow, crow's-feet, crow's-nest, crowbar, crowd, crowd-puller, crowded, crown, crown colony, crown court, crown jewels, crown prince, crown princess, crowning, crozier, crucially, crucible, crucifix, crucifixion, cruciform, crucify, crud, cruddy, crude, crudely, crudity, cruel, cruelly, cruelty, cruet, cruise, cruise missile, cruiser, crumb, crumble,