Caffeine is widely found in tea and canned drinks .

咖啡因广泛存在于茶和罐装饮料中。

Is extremely low in caffeine .

含有非常少量的咖啡因。

Ingredients often include amphetamine and caffeine .

其成份往往包括安非他命和咖啡因。

Caffeine addiction is a powerful thing .

咖啡因成瘾是十分厉害的事情。

Caffeine is the major chemical in coffee .

咖啡因是咖啡中的主要化学物质。