The insurance covers the apartment and all the property therein.這個保險涵蓋公寓以及其中的一切財産。

His name was mentioned in the article, although he was incorrectly described therein as a medical doctor.他的名字在文中被提及，雖然他被錯誤地描述成了一個内科醫生。

They have to make a decision soon. Therein lies the problem. [=that is why there is a problem] If they act too quickly, they run the risk of choosing the wrong plan.他們得馬上做出決定。這就是問題所在。如果他們行動過快，就有選擇錯誤計劃的風險。