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。
Large sunspot group ar 9169 moved across the sun during 2000 September and decayed in a few weeks.
大型太阳黑子团ar 9169在2000年9月穿过了太阳，在几周内衰退了。
Afterwards he found a sunspot group which lived the western limb of the sun, to reappear on its eastern limb, and finally to regain its old position.
后来，他发现有一群黑子在太阳西部的边缘上停留了一段时间才消失，然后在太阳东部边缘上。
Afterwards he found a sunspot group which lived the western limb of the sun, to reappear on its eastern limb, and finally to regain its old position.
后来，他发现有一群黑子在太阳西部的边缘上停留了一段时间才消失，然后在太阳东部边缘上。
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