n.咖啡因
Now there are cola drinks without caffeine. 现在也有不含咖啡因的可乐类饮料。
I'm trying to cut down on sugar and caffeine. 我决定减少对糖和咖啡因的摄取量。
Caffeine makes people nervous and unsleeping. 咖啡因是人们紧张和难以入睡。
adj.脱去咖啡因的；无咖啡因的
