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科学美国人60秒 SSS Science News Briefs from around the Globe

时间:2020-03-03 01:54来源:互联网 提供网友:nan   字体: [ ]
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A few brief reports about international science and technology from Indonesia to Spain, including one from Brazil about the highest-voltage electric eel1 ever discovered.

Full Transcript 

Hi, I’m Scientific American podcast editor Steve Mirsky. And here’s a short piece from the December 2019 issue of the magazine, in the section called Advances: Dispatches from the Frontiers of Science, Technology and Medicine. The article is titled “Quick Hits,” and it’s a rundown of some science and technology stories from around the globe, compiled by assistant news editor Sarah Lewin Frasier.

From Spain:

Summer’s powerful drought revealed a more than 4,000-year-old oval of at least 100 standing2 stones called the Dolmen of Guadalperal, which had been submerged since 1963 in an engineered reservoir.

From Russia:

Scientists identified a small group of Nordmann’s greenshanks, among the most endangered shorebirds, in a bog3 in Russia’s far eastern region. They helmed the first in-depth study of the bird since 1976 and are the first ever to capture a photograph of an adult on a nest.

From New Zealand:

Researchers found that humpback whales traveling near Raoul Island, 700 miles off New Zealand’s coast, learn songs from members of other breeding grounds.

From Indonesia:

Climate models have more firmly connected a record-setting cold European summer in 1816 to the previous year’s eruption4 of Indonesia’s Mount Tambora, which injected sulfur5 dioxide into the atmosphere and caused widespread surface cooling.

And from Brazil:

A newfound species of electric eel in Brazil, Electrophorus voltai, produces the strongest shock scientists have ever measured from a living animal. It can produce 860 volts6 at up to one amp of current. 

That was “Quick Hits,” by Sarah Lewin Frasier.


点击收听单词发音收听单词发音  

1 eel bjAzz     
n.鳗鲡
参考例句:
  • He used an eel spear to catch an eel.他用一只捕鳗叉捕鳗鱼。
  • In Suzhou,there was a restaurant that specialized in eel noodles.苏州有一家饭馆,他们那里的招牌菜是鳗鱼面。
2 standing 2hCzgo     
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。
3 bog QtfzF     
n.沼泽;室...陷入泥淖
参考例句:
  • We were able to pass him a rope before the bog sucked him under.我们终于得以在沼泽把他吞没前把绳子扔给他。
  • The path goes across an area of bog.这条小路穿过一片沼泽。
4 eruption UomxV     
n.火山爆发;(战争等)爆发;(疾病等)发作
参考例句:
  • The temple was destroyed in the violent eruption of 1470 BC.庙宇在公元前1470年猛烈的火山爆发中摧毁了。
  • The eruption of a volcano is spontaneous.火山的爆发是自发的。
5 sulfur ps4wC     
n.硫,硫磺(=sulphur)
参考例句:
  • Sulfur emissions from steel mills become acid rain.炼钢厂排放出的硫形成了酸雨。
  • Burning may produce sulfur oxides.燃烧可能会产生硫氧化物。
6 volts 98e8d837b26722c4cf6887fd4ebf60e8     
n.(电压单位)伏特( volt的名词复数 )
参考例句:
  • The floating potential, Vf is usually only a few volts below ground. 浮置电势Vf通常只低于接地电位几伏。 来自辞典例句
  • If gamma particles are present, potential differences of several thousand volts can be generated. 如果存在γ粒子,可能产生几千伏的电位差。 来自辞典例句
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