there·in
adverb/ˌðeərˈɪn/
/ˌðerˈɪn/
(law or formal)Idioms - in the place, object, document, etc. mentioned
在那里，在其中（指提及的地点、物体、文件等） - The insurance policy covers the building and any fixtures contained therein.
保险单为这座大楼及其中所有的设施保了险。 - In court she denied any knowledge of the article and the allegations made therein.
在法庭上，她否认了解这篇文章及其中的指控。
- The insurance policy covers the building and any fixtures contained therein.
Idioms
therein lies…
- used to emphasize the result or consequence of a particular situation
那一点就是；那方面便是；…就在那里 - 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。
- He works extremely hard and therein lies the key to his success.