尚不清楚诺基亚在软件研发上投入什么，但这一图表聚焦了成本是如何急剧下降的。
It's unclear what Nokia spent on software development, but this chart highlights how costs will be dropping dramatically.
近视是指一个人对近距离的物体比较容易看清而远处的物体看不清楚的现象，它的产生是由于光线的聚焦点落在了视网膜之前。
When you are short-sighted, your eyes focus well only on close objects, while more distant objects appear blurred. This is because light rays focus in front of the retina.
由于这种变形，进入眼睛的光线无法清楚地聚焦在视网膜上。
Because of the imperfection, light entering the eye is not clearly focused on the retina.
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