“探险队等的营地”可以翻译为 “the campsite(s) of the expedition team (and others, if applicable)” 。
如果强调“等”所代表的“以及其他类似团体”这种宽泛概念,也可简化为 “the campsites for expedition teams and the like” ;“the campsites of expedition teams and similar groups” 也是可行的表达。
如果语境中明确知道“等”所指具体对象,也可更精准地翻译,比如 “the campsites of the expedition team, researchers and support staff”(探险队、研究人员和后勤支持人员的营地 ) 。