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1·Although the Chinese saying goes, courtesy light Affective heavy, but in fact, people also attaches great importance to the number of gifts and their own price.

虽然中国有句话“礼轻情意重”，但实际上，人们也非常注重礼物的数量和其本身的价格。

2·Fifteen seconds later, courtesy of another hit phone-the Samsung Galaxy s-south Korea, Japan, and Europe light up the same way.

15秒钟后，由于另一部热门手机——三星的Galaxy S，韩国、日本和欧洲也同样亮了起来。

3·Electric light courtesy of Edison a modern Prometheus.

电灯，爱迪生的礼物，现代的普罗米修斯。

4·Above: 3-dimensional stacked layers of liquid crystal droplets could have some novel and useful effects on light that passes through them. Image courtesy NASA.

上图：液晶微滴层层叠加成的三维体可能对穿透它的光线产生全新而有价值的影响。NASA授权图片。