This is the adjective for archaeology: the study of ancient human societies by looking at what they left behind — buildings, graves, tools, pots, and so on. If a find, a site, or a piece of evidence is archaeological, it belongs to that work or was read in that way.

archaeology考古學的 this is the adjective for這是它的形容詞：the study of ancient human societies研究古代人類社會，by looking at what they left behind看他們留下的東西——buildings, graves, tools, pots, and so on建築、墓葬、工具、陶器等等。if a find, a site, or a piece of evidence is archaeological如果一個發現、遺址或證據是「考古的」，it belongs to that work or was read in that way就是屬於這門研究，或是用這種方式被解讀的。

You will meet it in “archaeological site,” “archaeological evidence,” “archaeological museum.” Though actually, people sometimes stick it on anything very old as a joke (“this chair is archaeological”); that is stretching it. The study is about people and the things people made, not mostly about dinosaurs.

"archaeological site"考古遺址、"archaeological evidence"考古證據、"archaeological museum"考古博物館，you will meet it in這些說法都會用到它。though actually不過實際上，people sometimes stick it on anything very old as a joke有人會開玩笑地把它用在任何很舊的東西上（"this chair is archaeological"「這張椅子都是考古文物了」）；that is stretching it這就是誇張的用法。the study is about people and the things people made這門研究談的是人和人做的東西，not mostly about dinosaurs主要不是在講恐龍。

British spelling keeps the ae (archaeological); American English often writes archeological. Both name the same kind of study.

British spelling英式拼法 keeps the ae保留 ae（archaeological）；American English美式英文 often writes archeological常常寫成 archeological。both兩種寫法 name the same kind of study指的是同一種研究。