第一章简明扼要地介绍了活动星系核的定义 、 研究意义和分类.
网络文摘精选
In your terminology, it is probably more accurate to call us Galactic Trouble Shooters.
使用你们的术语, 叫我们银河问题解决者更准确些.
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Astronomers usually assume that interstellar dust is closely confined to the galactic plane.
天文学家通常认为,恒星际星尘都是紧靠着银河平面的.
词典精选例句
You are Galactic and Angelic and you are on Earth having a human experience.
你是银河天使,你在地球上进行人生体验.
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Virgin Galactic envisions a future where space voyages will become as common as airplane travel.
维珍银河公司设想将来太空旅行能像乘飞机旅行一样普遍.
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Constellations near the Galactic Center include Sagittarius, Libra, Scorpius, Scutum, and Ophiuchus.
银心附近的星座包括人马座 、 天秤座 、 天蝎座 、 盾牌座和蛇夫座.
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