Kazan
喀山[苏联伏尔加河中游城市]
🗣️ 情景例句
Oh, well, really ...
噢 哦 真的……
Observation is the best teacher.
观察为良师。
The development of such a telescope will be one of the great astronomical projects of the twenty-first century.
而开发这样一台望远镜将会是21世纪天文学的一个重要的研究课题。