Let's break the name down. The "normal" is a vector perpendicular to a surface, which we can use to calculate lighting.
首先我们从名字上开始分析，所谓“法线”指的是垂直于平面的向量，我们使用这个来计算光照。
2
Globally, a rise of 1c in sea surface temperature would increase the occurrence of strong storms by about one third, the researchers calculate.
研究者的统计表明，全球范围内海洋表面温度每升高1c，强风暴的发生就会增加大约三分之一。
3
Some have designed algorithms that use satellite data on surface temperatures to calculate the rate at which plants are absorbing and transpiring water.