therein释义:adv. 在其中;在那里例句:He works extremely hard and therein lies the key to his success.他工作极其努力,这就是他成功的关键。herein释义:adv. 本文中,本书中;于此,在此n. (Herein) (美、德)赫赖因(人名)例句:The problems and solutions herein were mentioned yesterday.这里的问题和解决方案昨天都提到了。