Of all the stars in the sky, the pole-star is the most useful to the mariner.
浩瀚宇宙，仰望星空，其中北极星对航海者最有用。
They concentrated attention, not on heliacal risings and Settings, not on the horizon, but on the pole star and on the circumpolar stars which never rise and never set.
他们关注的不是星辰偕日升降，也不是地平线附近的星辰，而是永不落下的北极星和拱极星。
This is also the reason why every few thousand years, we get a new pole star.
而这也是为什么每隔几千年我们看到一颗新的北极星的原因。
The shot, captured in July and released this week, shows the apparent motion of the stars around Polaris , the star that's almost exactly aligned with Earth's north celestial pole.
这幅拍摄于七月份、公布于本周的照片展示了群星围绕北极星的运动，北极星几乎完全精确的对准北天极。
At the end of its handle is the star Polaris, which is known throughout the world as the North Pole star.
在它的勺柄尾端是北极星，全世界人都知道的北极星。
The reason for this was that he decided to orientate the map in the direction of the Pole Star since Polaris was the immovable guiding light in which the voyagers of that era placed their trust.
因为北极星是一盏不动的导航灯，那个时代的航海家们主要依靠北极星来导航。
The gnomon in the middle is perpendicular to the plate, parallel to the earth's axis, and points to the celestial North Pole (near the north Star).
晷针垂直于晷盘，平行于地轴，指向天北极(北极星附近)。
The gnomon in the middle is perpendicular to the plate, parallel to the earth's axis, and points to the celestial North Pole (near the north Star).
晷针垂直于晷盘，平行于地轴，指向天北极(北极星附近)。
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