基本解释[天文学]拱极星座英汉例句双语例句It is high in the northern sky in the circumpolar constellation Ursa Major, the Great Bear .它是高在北天空在极地周围的星座大熊座，大熊星座。词组短语短语North circumpolar constellation 北拱极星座;北天拱极星座专业释义天文学拱极星座