Once,we camped along Chalk Creek.
这是2022年新高考考试全国卷1语法填空中的一个句子。
请问句中的along 是什么使用方法？依据知识，大家应该是“在……边上”（beside）露营吧？如何可能是“沿着……”（along）露营呢？这不符合常理啊？
附有关上下文：
Someof our memories are funny, especially from the early years when our childrenwere little. Once, we camped along ChalkCreek. I was worried that our 15-month-old boy would fall into the creek .I tied a rope around his waist to keep him near to our spot. That lasted aboutten minutes. He was uncomfortable, and his crying let the whole campground knowit. So instead of tying him up, I just kept a close eye on him. It worked — hedidn’t end up in the creek. My three-year-old, however, did.
不难理解啊！这不是一个人，而是一家人（多个人），所以“多个人”是可以成一条线那样“沿着”小溪露营的。又如：
The army encamped along the river. 军队在沿河边扎营。
Refugees are encamped along the border. 难民们露营在边界沿线。
