【英语时差8,16】像猪一样快乐

（单词翻译）

On this Moment of Science Don and Yael answer the age-old question: Do pigs sweat?   

 

D: Congratulations on completing your PhD in Zoology¹ this week, Yael. That makes six advanced degrees for you and eleven for me. 

Y: Well, we want to make sure Moment of Science listeners know they're getting only the best information. 

D: You must be proud.

 Y: I'm happy as a pig in mud.

 D: Hey, there's a good moment of science.

 Y: Why are pigs happy? 

D: No, why do pigs roll in mud? I mean, you'd never catch me doing that! 

Y: But I have seen you sweating.

 D: Well, I guess so . . .

 Y: Ever seen a pig do that? 

D: Have I seen a pig sweat? Well . . . I guess not. But what's your point?

 Y: Pigs are doing the same thing when they roll in mud that we're doing when we seat. They're staying cool.

 D: Staying cool? 

Y: Sure. Humans get rid of excess heat by sweating. When the sweat evaporates it carries heat energy away from your body, which is why a sudden breeze feels cold when you are wet. Pigs don't have sweat glands². They have to add moisture to their skins in order to get it to evaporate and take away heat.

 D: And mud has moisture in it.

 Y: It sure does; otherwise it would be dry dirt. Anyway, mud may be a pig's only option if it's inside a pen. If there were water to splash in, the pig might choose that to cool off. 

D: And that's something even people do! 

Y: At every swimming pool in town.

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