For skywatchers it means the passing of the season's trademark Summer Triangle of stars and the arrival of the autumn constellations.

而对天文观察者来说，它意味着夏季的标志—夏季大三角（在夏季的东南方高空里由天琴座的织女星、天鹅座的天津四及天鹰座的牛郎星组成的三角形）的退去和预示着秋季的星座的到来。

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Look eastward this evening, and it's hard to miss the season's signature star formation, called the Summer Triangle.

今夜向东看去，不难发现此季的标志性恒星形成（图），即“夏季大三角”。

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Still, if you look for this pattern this month you'll find that, around the time of the winter solstice, the Summer Triangle is descending in the west in early evening.

同样的，在这个月份的冬至前后，如果你寻觅这三角形，定会发觉在西方的天空，夜幕降临不久它便渐渐西沉了。

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Still, if you look for this pattern this month you'll find that, around the time of the winter solstice, the Summer Triangle is descending in the west in early evening.

同样的，在这个月份的冬至前后，如果你寻觅这三角形，定会发觉在西方的天空，夜幕降临不久它便渐渐西沉了。

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