时差N小时 一天之中什么时候最冷?(上)

Anyone with the gumption¹ to be up before dawn will tell you that when those first rays of light come over the horizon after a clear night, it gets warmer, and...

任何有进取心并且早破晓前起床的人都会告诉你，当在晴朗的夜晚后第一缕阳光越过地平线，气温就会回暖，而且…

Don?

唐？

Uh, Yael. I'm trying to do a radio program here.

嗯，雅艾尔。我想在这里听听广播节目。

Yes, but when the sun first rises it doesn't get warmer right away.

可以，但当太阳刚升起的时候气温不会立刻变暖。

I-it doesn't.

不是这样的。

No, it actually feels colder.

实际上会感觉更冷。

In fact, barring any storm fronts, the coldest time of day is sometime just after dawn.

事实上，除了任何风暴以外,一天中最冷的时间恰巧是黎明的某个时段。

It is?

真的吗？

See, the sun is kind of like a microwave and the ground is kind of like a frozen² TV dinner.

你看，太阳就像是微波炉，而地面有点像冰冻的电视晚餐。

Okay. I like dinner. Go on.

好吧。我喜欢晚餐。你继续说。

The earth absorbs some heat from the atmosphere during the night.

地面在夜间吸收大气中的热量。

Sort of like putting your dinner out to thaw³, but during the day, the sun acts like a microwave and quickly heats up the ground.

就像是把晚餐解冻一样，但在白天，太阳就像微波炉并且使地面快速升温。

Once the sun sets, the ground cools off by radiating⁴ heat out to the atmosphere and some escapes into space.

一旦日落，地面会通过散发热量到大气中进行冷却并且有一些会逃进宇宙空间。

Just as when the microwave stops, your dinner starts to cool down.

就像微波炉停止加热一样，晚餐开始冷却。

That makes sense.

有道理。

1 gumption   

n.才干

参考例句：

• With his gumption he will make a success of himself.凭他的才干，他将大有作为。
• Surely anyone with marketing gumption should be able to sell good books at any time of year.无疑，有经营头脑的人在一年的任何时节都应该能够卖掉好书。

2 frozen   

adj.冻结的，冰冻的

参考例句：

• He was frozen to death on a snowing night.在一个风雪的晚上，他被冻死了。
• The weather is cold and the ground is frozen.天寒地冻。

3 thaw   

v.（使）融化，（使）变得友善；n.融化，缓和

参考例句：

• The snow is beginning to thaw.雪已开始融化。
• The spring thaw caused heavy flooding.春天解冻引起了洪水泛滥。

4 radiating   

发射出（光、热等）( radiate的现在分词 )； （使品质或情感）显出，流露； 射出，向四周伸出； 散热

参考例句：

• Aunt Zhang, her face radiating happiness, stood at the door waiting for her daughter-in-law who was coming from town. 张大娘春风满面地站在大门口，等待从城里来的儿媳妇。
• The rice-size pellets will remain there permanently, radiating his tumor from inside. 那些米粒大小的弹丸将永久留在前列腺内，对肿瘤进行放射治疗。 来自英汉非文学 - 生命科学 - 癌症与艾滋病