A very bright, variable, double star in the constellation Aquila, approximately 15.7 light-years from Earth.
牵牛星，河鼓二：天鹰座的一颗非常明亮的，易变的双星，距地球约15.7光年。
To the west of Enif, half way to the star Altair in the constellation Aquila, is Delphinus the Dolphin — one of the few constellations which actually resembles its namesake.
飞马座ε星的西面，即和飞鹰座牛郎星的中间位置上，是以海豚命名的海豚星座—因为这个星座的形状和海豚非常相似。
Aquarius: a constellation in the equatorial region of the Southern Hemisphere near Pisces and Aquila.
宝瓶座：在南半球赤道区邻近双鱼座及天鹰座的一星座。
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