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科学美国人60秒 蔬菜是原始人饮食的重要组成部分

时间:2022-04-01 07:59来源:互联网 提供网友:nan   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-second Science, I'm Christopher Intagliata.

这里是科学美国人——60秒科学系列,我是克里斯托弗·因塔格里塔。

The paleo diet is a popular high-protein diet that aims to mimic1 what our hunter-gatherer ancestors ate.

“原始人饮食法”是一种流行的高蛋白饮食法,旨在模仿我们狩猎采集祖先的饮食。

But what we buy at the supermarket doesn't quite approximate those ancient foods.

但是我们在超市买到的东西和那些古代食物不太一样。

Take for example, star lily roots. Heard of those?

以星百合根为例。你听说过这种食物吗?

"They taste a bit like yams."

“味道有点像山药。”

Lyn Wadley is an archaeologist at the University of the Witwatersrand in South Africa.

南非威特沃特斯兰德大学的考古学家林·瓦德利说到。

Her team recently discovered the charred2 remains3 of star lily roots in South Africa's Border Cave—

她的团队最近在南非边界洞穴中发现了烧焦的星百合根遗迹,

hunks of roasted root that date to 170,000 years ago.

这些大块烤根可追溯到17万年前。

"And there's greater glucose4 availability once the root vegetables were cooked. And they knew that nearly 200,000 years ago, which I think is extraordinary. Or maybe they didn't know the chemistry of it, but they would have realized they felt far more satisfied after eating a meal that's cooked rather than one that is raw."

“块根类蔬菜经过烹饪后,葡萄糖的利用率就会上升。他们早在20万年前就知道了这一点,我认为这非常了不起。或许他们不知道其中的化学成分,但他们会意识到,食用烹饪过的食物比吃生食要令人心满意足得多。”

It's not easy to identify a charred chunk5 of ancient food, though. So Wadley's team gathered an array of raw ancient foodstuffs6 and roasted and charred them in ovens and campfires. They then did visual comparisons to the ancient sample and observed them both in a scanning electron microscope—which revealed that the charred leftovers7 from that meal, 170,000 years ago, were probably chunks8 of star lily root.

不过,要辨认出大块烧焦的古代食物并不容易。因此,瓦德利的团队收集了大量古代生食,在烤炉和营火中烘烤烧焦。之后,他们将其与古代样本进行目视比对,并用扫描电子显微镜进行观察,结果显示,17万年前那顿饭烧焦的剩饭,很可能是星百合根块。

Details and photos of those roots are in the journal Science.

这些根茎的细节和图片刊登在《科学》期刊上。Wadley says the find also provides a better view of what the ancients ate. "I think the people who assume the paleo diet was based on protein simply haven't done their homework properly."

瓦德利表示,这项研究也让我们对古代人的饮食有了更深入的了解。“我认为那些认为原始人饮食是以蛋白质为基础的人,根本没有做好功课。”Thanks for listening for Scientific American's 60-second Science. I'm Christopher Intagliata

谢谢大家收听科学美国人——60秒科学。我是克里斯托弗·因塔利亚塔。


点击收听单词发音收听单词发音  

1 mimic PD2xc     
v.模仿,戏弄;n.模仿他人言行的人
参考例句:
  • A parrot can mimic a person's voice.鹦鹉能学人的声音。
  • He used to mimic speech peculiarities of another.他过去总是模仿别人讲话的特点。
2 charred 2d03ad55412d225c25ff6ea41516c90b     
v.把…烧成炭( char的过去式);烧焦
参考例句:
  • the charred remains of a burnt-out car 被烧焦的轿车残骸
  • The intensity of the explosion is recorded on the charred tree trunks. 那些烧焦的树干表明爆炸的强烈。 来自《简明英汉词典》
3 remains 1kMzTy     
n.剩余物,残留物;遗体,遗迹
参考例句:
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
4 glucose Fyiyz     
n.葡萄糖
参考例句:
  • I gave him an extra dose of glucose to pep him up.我给他多注射了一剂葡萄糖以增强他的活力。
  • The doctor injected glucose into his patient's veins.医生将葡萄糖注入病人的静脉。
5 chunk Kqwzz     
n.厚片,大块,相当大的部分(数量)
参考例句:
  • They had to be careful of floating chunks of ice.他们必须当心大块浮冰。
  • The company owns a chunk of farmland near Gatwick Airport.该公司拥有盖特威克机场周边的大片农田。
6 foodstuffs 574623767492eb55a85c5be0d7d719e7     
食物,食品( foodstuff的名词复数 )
参考例句:
  • Imports of foodstuffs accounted for a small proportion of total imports. 食物进口仅占总进口额的一小部份。
  • Many basic foodstuffs, such as bread and milk, are tax-free. 许多基本食物如牛奶和面包是免税的。
7 leftovers AprzGJ     
n.剩余物,残留物,剩菜
参考例句:
  • He can do miracles with a few kitchen leftovers.他能用厨房里几样剩饭做出一顿美餐。
  • She made supper from leftovers she had thrown together.她用吃剩的食物拼凑成一顿晚饭。
8 chunks a0e6aa3f5109dc15b489f628b2f01028     
厚厚的一块( chunk的名词复数 ); (某物)相当大的数量或部分
参考例句:
  • a tin of pineapple chunks 一罐菠萝块
  • Those chunks of meat are rather large—could you chop them up a bIt'smaller? 这些肉块相当大,还能再切小一点吗?
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