core

n.果心；核心，要点

coquetry, coquette, coquettish, coquettishly, cor anglais, coracle, coral, coral island, coral reef, corbel, cord, cordage, cordial, cordiality, cordially, cordite, cordon, cordon bleu, corduroy, corduroy road, CORE (also Core), corgi, coriander, coring bit, Corinthian, cork, corkage, corked, corkscrew, corm, cormorant, corn, corn on the cob, corn pone (US also pone), corn-cob, corn-exchange, cornea, corneal, corned, cornelian,