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Are emergent culminations developed through influence over time .

都是通过时间的影响。

But in truth , the biggest events of 2008 were not so much one-off actions as culminations of trends that had been building for years .

不过，这起2008年最重大事件并非一蹴而就，实际上，这类行为数年来一直盛行。

Here was the real essence of the hun thien theory discussed above ; once having gained a clear understanding of the diurnal revolution of the heavens , then the culminations and lower transits of the circumpolar stars would fix the position of every point on the celestial equator .

这就是上文谈到的“浑天学说”的实质；对地球每日绕太阳公转的事实有了清晰地了解，我们就知道拱极星的中天和下中天在天球赤道上每个点的位置是固定的。