This is the 5950th most frequent Chinese word.
天文台
Observatory.
Here, '天文台' (Observatory) refers to a scientific facility or institution dedicated to astronomical observations and research.
天文台用于观察和研究星空中的现象。
The observatory is used for observing and studying phenomena in the starry sky.
In this context, '天文台' is referred to as a physical location or establishment that serves as an observatory.
我昨天参观了一个历史悠久的天文台。
Yesterday, I visited a historic observatory.
Here, '天文台' represents the concept or act of building observatories to enhance scientific pursuits.