source of light中文什么意思

例句与用法

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1. Originally a local event in a small town close to the russian border , the seventh annual contest saturday drew some 100 throwers from as far afield as canada , russia and belgium . founder christine lund describes the event as a good source of light exercise with an environmentally friendly
   这项一年一度的比赛发源于俄罗斯边境附近的一个小镇，上周六开幕的第七届扔手机世锦赛吸引了从加拿大俄罗斯和比利时远道而来的约100名选手。
2. Because we are simulating a photograph with the camera lens focused on someone in the foreground , we choose for our first stroke a brush about one - quarter inch in diameter ? the size of the circle of confusion that might be produced on film by a distant point source of light
   因为我们是在模拟一张聚焦于前景某个人的照片，对于该点我们就应选择一个大约四分之一英寸直径的画笔这个大约也就是一个遥远的光源在胶卷上可能产生的弥散圈的大小。