key

n.钥匙；键；关键；答案 a.关键的

kelvin, ken, kennel, kepi, kept, kept woman, kerb (also esp US curb), kerb drill, kerb-crawling, kerbstone, kerchief, kerfuffle, kernel, kerosene, kerosene, kerosine (also kerosine), kestrel, ketch, ketchup, kettle, kettledrum, key (also cay), key money, key signature, key-pad, key-ring, keyboard, keyhole, keynote, keystone, KG, KGB, khaki, kHz, kibbutz, kibbutznik, kick, kick-off, kick-start, kickback, kicker,