“雾下山，地不干。”雾与云并没有本质上的区别，雾是地上的云，云是空中的雾。半山腰的云层，从地上看来是层云，但在半山腰的人却认为它是雾。雾下山，其实就是云逐渐降低高度的一种现象。当云层高度降低到帖近地面的高度也就成了雾，这种现象在暖湿气流湿度达非常高时可能出现。对于暖锋云系来讲，我们起先看到的是高云，后面是中云，再是低云。云层高度的逐渐降低说明所处的地方愈来愈接近锋面，因此天气即将转坏。地不干说明有降水发生。
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
Habit cures habit. 新风移旧俗。Habit is second nature. 习惯成自然。Half a tale is enough for a wise man. 聪明人凡事只须听一半，就会明白究竟。Half a lo