【英语时差8，16】日出日落

 Don: The dawn's early light, or the twilight's last gleaming.

Ya?l: Don?

D: Yes Ya?l?

Y: We've been in this art museum for five hours now, and you've spent the whole time staring at that one photograph of a sunset.

D: Are you sure?

Y: Of course I'm sure! You haven't budged¹!

D: But are you sure it's a sunset. It might be a sunrise.

Y: Ahhh...

D: I wonder if we can tell, just by looking at it.

Y: Actually, although there's no way to tell with certainty, there are a couple of clues you can look for.

D: Really?

Y: Sure. Let's think about what happens to the atmosphere during the day. It warms up, which means it can hold more moisture, and traffic and other activities churn a certain amount of dust and pollutants² into it. All this extra stuff in the air can make the sunset much redder than sunrise. It can also make the light more diffuse³. Artists sometimes remark that the light at sunset is softer and warmer than the sharp light at sunrise.

D: Is that so?

Y: Yes, although rain or other weather can disrupt this pattern. Another clue is the ground, which cools down overnight. This can cause dew to condense out of the air, and mist to form in the air near the ground. If there's any rising mist or dew in your photo, chances are it's sunrise.

D: OK then, that means this picture's...Hey! They turned off the lights!

Y: The museum's closed, Don. You should have asked me earlier, instead of standing⁴ there for five hours! 

1 budged   

v.（使）稍微移动( budge的过去式和过去分词 )；（使）改变主意，（使）让步

参考例句：

• Old Bosc had never budged an inch--he was totally indifferent. 老包斯克一直连动也没有动，他全然无所谓。 来自辞典例句
• Nobody budged you an inch. 别人一丁点儿都算计不了你。 来自辞典例句

2 pollutants   

污染物质（尤指工业废物）( pollutant的名词复数 )

参考例句：

• Pollutants are constantly being released into the atmosphere. 污染物质正在不断地被排放到大气中去。
• The 1987 Amendments limit 301(g) discharges to a few well-studied nonconventional pollutants. 1987年的修正案把第301条（g）的普通排放限制施加在一些认真研究过的几种非常规污染物上。 来自英汉非文学 - 环境法 - 环境法

3 diffuse   

v.扩散；传播；adj.冗长的；四散的，弥漫的

参考例句：

• Direct light is better for reading than diffuse light.直射光比漫射光更有利于阅读。
• His talk was so diffuse that I missed his point.他的谈话漫无边际，我抓不住他的要点。

4 standing   

n.持续，地位；adj.永久的，不动的，直立的，不流动的

参考例句：

• After the earthquake only a few houses were left standing.地震过后只有几幢房屋还立着。
• They're standing out against any change in the law.他们坚决反对对法律做任何修改。