英语翻译Afterwards he found a sunspot which lived long eonough t

英语翻译
Afterwards he found a sunspot which lived long eonough to disappear from view on the westerner limb of the sun,to reappear on its easterner limb,and finally to regain its old position.
后来,他发现有一个停留在太阳西部的边缘上的黑子过了很长一段时间才消失在太阳的东部边缘上,最后再次获得了原位.