observatory|observatories

山顶上有一座小型天文台。

There is a small ___observatory on the mountaintop.

山顶上的天文台配备了最先进的望远镜用于观测星象。

The ___observatories on the mountaintop are equipped with state-of-the-art telescopes for stargazing.

学生们参观了山顶的天文台，那里有许多专业望远镜。

The students visited the mountain-top ___observatory, which has many professional telescopes.