以下两段都是“中华考试网”中“2019上半年CATTI二级笔译真题英译汉（第二篇）”中的内容。

The scientific objectives of the research (e.g. anthropological studies on socio-economic conditions) result in a better knowledge and understanding of the history of the site, and its inhabitants that constitute a rich exceptional legacy of the intangible heritage. 

请问粗体字中的legacy和heritage都有“遗产”的意思，同时使用是不是重复了？

The site integrity however, is put under dual pressures: Endogenous: exerted by more than 100,000 inhabitants distributed over 112 historic settlements scattered over the site, who constantly try to expand their dwelling areas; exogenous: related to the proximity of the town of Siem Reap, the seat of the province and a tourism hub.

请问粗体字是不是the town of Siem Reap的同位语，该如何翻译呢？