2018考研英语长难句分析指导（四十三）

Some philosophers argue that rights exist only within a social contract, as part of an exchange of duties and entitlements.

结构分析：句子主干是Some philosophers argue that…。that引导的宾语从句中，as part of an exchange of duties and entitlements充当了补语的角色。

译文：有些哲学家主张说，权利只存在于社会契约中，是责任与利益相交换的一部分。