'Alpha Hydrae'是英文词语，翻译成中文是“水蛇座α星”。它是水蛇座中最亮的恒星，也是离地球最近的一颗。
例句：
1. Alpha Hydrae is a binary star system with two stars orbiting around a common center of mass.（水蛇座α星是一个由两颗星围绕一个共同的质心旋转的双星系统。）
2. Alpha Hydrae can be seen in the southern sky from most parts of the world.（水蛇座α星可以从世界上大多数地方的南部天空看到。）
3. The distance between Earth and Alpha Hydrae is approximately 130 light years.（地球与水蛇座α星的距离约为130光年。）
4. Alpha Hydrae is a red giant star with a surface temperature of around 4,400 Kelvin.（水蛇座α星是一颗红巨星，表面温度约为4400开尔文。）
5. Astronomers have been studying Alpha Hydrae for many years to learn more about the evolution of stars.（天文学家已经研究水蛇座α星多年，以了解恒星演化的更多信息。）
6. The brightness of Alpha Hydrae can vary over time, which makes it an interesting object to observe.（水蛇座α星的亮度随时间变化，这使它成为一种有趣的观测对象。）
7. Alpha Hydrae is also known by its traditional name Alphard, which comes from the Arabic word "al-fard" meaning "the solitary one".（水蛇座α星也以其传统名称Alphard而闻名，来自阿拉伯语“al-fard”的词语，意为“孤独的人”。）
8. In ancient times, Alpha Hydrae was associated with the mythical creature of the Hydra.（在古代，水蛇座α星与神话生物九头蛇有关。）
9. Alpha Hydrae is part of the constellation Hydra, which is the largest of the 88 recognized constellations.（水蛇座α星是星座水蛇座的一部分，这是88个已认可的星座中最大的一个。）
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