keen

a.渴望的，热心的；理解力强的，敏锐的

kamikaze, kangaroo, kangaroo court, Kansas, kaolin, kapok, kaput, karat, karate, karma, kart, Kashmir, kayak, kazoo, KB, KBE, KC, kebab, kedgeree, keel, keenly, keenness, keep, keep (radio) tuned for, keep (sb/sth) away (from sb/sth), keep a promise, keep an eye on, keep at, keep away, keep back, keep clear of, keep company with, keep doing sth., keep down, keep early hours, keep faith, keep friends with, keep from, keep from doing, keep house,