And, if that be not true, why do we focus so intently on what some guy on the street said to us in passing?
而且,如果那不是真的,我们为什么如此专心的注意身旁经过的人对我们说了些什么呢?
They often retrieve pages that include a mere passing mention of the search term, but do not really focus on the subject at all.
他们通常检索单纯匹配检索词的网页,而并不集中于主题内容的检索上。
Spherical Aberration — causes light rays passing through a lens (or reflected from a mirror) at different distances from the optical center to come to focus at different points on the axis.
球差-使以不同孔径角穿过透镜(或从镜面上发射)的光线不能聚焦在轴上的同一点。
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