conning-tower

n raised structure on a submarine containing the periscope （潜水艇上带有潜望镜的）了望塔.

conjugally, conjugate, conjugation, conjunction, conjunctive, conjunctivitis, conjuncture, conjuration, conjure, conjurer (also conjuror), conjuring, conk, conker, connect, connect with, connecting rod, connection, connection (Brit also connexion), connective, connexion, connivance, connive, conniving, connoisseur, connotation, connotative, connote, connubial, conquer, conqueror, conquest, conquistador, Conrad Hilton, consanguinity, conscience, conscience money, conscience-stricken, conscientious, conscientious objector, conscientiously,