现在，考古学家断定这些建筑物是在几百年间陆续建成的。

Until now, archaeologists had assumed that these were built over the course of centuries.

youdao

现在，考古学家断定这些建筑物是在几百年间陆续建成的。

Until now, archaeologists had assumed that these were built over the course of centuries.

youdao