根据徐光启农政全书介绍：这早霞、晚霞主要是指久晴情况下出现的霞，这种霞与有云情况下形成的云霞不一样，而是由于天气久晴空气中水汽含量较少，而尘埃、微粒较多，这些尘埃微粒吸收阳光中波长较短的色光如蓝、靛、绿、紫等，有的这些色光因改变反射方向不为人们所看见，而红光因其波长较长不易被尘埃微粒吸收而被其散射，这样被散射的红光便映红部分天空或大部分天空。
这种霞的颜色多呈乾红色，而不是呈褐色或暗红色。由于其水汽较少，虽有凝结核存在也不易成云致雨。
Although it rains, throw not away your watering pot. 纵然天下雨，休把水壶丢。Always taking out of the meal-tub and never putting in,
Bacchus has drowned more men than Nepture. 酒神淹死的人比海神多。Bad news has wings. 坏事传千里。Bad workmen often blame their tools. 拙匠常
Between friends all is common. 朋友之间不分彼此。Between the cup and the lip a morsel may slip. 功亏一篑。Between two stools one falls
Diligence is the mother of good luck. 刻苦是成功之母。Diligence is the mother of success. 勤奋是成功之母。Discontent is the first step i
Each bird loves to hear himself sing. 鸟儿都爱听自己唱歌。Each day brings its own bread. 天无绝人之路。Each man is the architect of his o
Facts are stubborn things. 事实是不容改变的东西。Failure is the mother of success. 失败是成功之母。Faint heart never wins fair lady.Fair an
First try, and then trust. 试了才能相信。Fish begins to stink at the head. 上梁不正下梁歪。Flattery brings friends, but the truth beget
Gain got by a lie will burn one’’s fingers. 靠欺骗得来的利益会使自己受害。Gather ye rosebuds while ye may. 有花堪折直须折。Genius often betrays