“一样古老”可以翻译为“equally ancient” 或 “as ancient as each other” 。
“equally ancient”强调两者在古老程度上是相等的。例如：These two temples are equally ancient.（这两座庙宇一样古老。）
“as ancient as each other”更直白地表达出彼此在古老程度上相同。例如：The two artifacts are as ancient as each other.（这两件文物一样古老 。）