To test this idea, he blocked their view of the Sun and used mirrors to change its apparent position.
为了验证这个想法,他挡住了它们看太阳的视线,并用镜子改变了太阳显现出来的方位。
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。
There's at least two issues here: how many jobs there are (or from the employer's view, how many candidates are competing for the position), and how much they pay.
这里至少有两个问题:有多少工作(或从雇主的观点看,有多少求职者竞逐职位),还有工资多少。
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