我们一直想知道这些古老的建筑是什么时候建成的的翻译：We have always wanted to know when these old buildings are built 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

We always wanted to know when the old building was built

We have always wanted to know when these old buildings are built

We want to know continuously when these ancient constructions are complete

We have always wanted to know about these ancient buildings built at what time the

We have always wanted to know when these old buildings are built