First described by Carl Linnaeus in 1758, Cygnus Cygnus can be considered a swan among swans, the type species, hence archetype, of all swans.
1758年，卡尔·林奈第一次描绘的天鹅——大天鹅，一直被人们视为天鹅中的天鹅，天鹅物种的代表，也是所有天鹅完美无瑕的原型。
The Cygnus Loop appears as a faint ring of glowing gases about three degrees across (six times the diameter of the full moon), located in the northern constellation Cygnus the Swan.
天鹅座的Loop看起来是个由炽热气体形成的模糊光环(满月直径的6倍大小)，坐落在天鹅座星群的北方。
One of the best cases known goes by the name Cygnus X-1, because it was the first X-ray source discovered in the constellation Cygnus the Swan.
最经典的例子就是天鹅座X-1，这是在天鹅座星云中发现第一次发现的X射线源。
One of the best cases known goes by the name Cygnus X-1, because it was the first X-ray source discovered in the constellation Cygnus the Swan.
最经典的例子就是天鹅座X-1，这是在天鹅座星云中发现第一次发现的X射线源。
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