ancient 指很久以前发生或存在的事物。用于描述历史时，指远古时代。
old 指长期以来一直存在着的事物，与times连用指古代，与days连用时指从前或旧社会。
antique 指已经很古老或颇有古风的事物，一般都具有较高价值。
参考例句
1. Greece is an ancient country. 希腊是个古老的国家。
2. You can see that ancient temple in the distance. 你在远处可以看到那座古老的寺庙。
3. They just found the scanning equipment, and it is Ancient technology not something they brought from Earth. 他们发现了扫描设备，并且是古人技术，不是从地球带来的（不太懂这句）。
英英解释
n.
1. a very old person
2. a person who lived in ancient times adj.
1. belonging to times long past especially of the historical period before the fall of the Western Roma
2. very old
