Afterwards he found a sunspot group which lived long enough to disappear from view on the western limb of the sun, to reappear on its eastern limb, and finally to regain its old position.
后来，他发现了一个太阳黑子群，它存在时间很长，从太阳的西边消失，又在东边出现，最后又回到原来的位置。
Unlike solar eclipses where the moon blocks the sun from our view in only a few locations on the planet, for lunar eclipses, as long as you can see the moon then you will see the eclipse.
与日食不同，当月亮遮挡太阳光时，在我们的视野里只有有限的位置可以供观看月食，就月食来说，只要你能看到月亮，就能看到它。
There is a momentum which looks pretty much unstoppable on any kind of long-term view.
从任何一个长远的考量出发，都会存在一种永不信息的推动力。
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