caffeine

n.咖啡碱；咖啡因；(兴奋剂)茶碱

cad, cadaver, cadaverous, caddie, caddie (also caddy), caddish, caddy, cadence, cadenza, cadet, cadet corps, cadge, cadger, cadmium, cadre, Caesar, Caesarean, caesura, cafe, cafeteria, caftan (also kaftan), cage, cage / keIdV; kedV/, cagey, cagily, caginess (also cageyness), cagoule, cahoots, caiman, cairn, caisson, cajole, cajolery, cake, cal, CAL (also Cal), calabash, Calais, calamine, calamitous,