SSS 2011-03-15
时间：2019-01-08 作者：英语课 分类：Scientific American(三)月
This is Scientific American’s 60-Second Science. I’m Cynthia Graber. This will just take a minute.
Imagine life without fire. A lot of huddling 1 for warmth.
The consensus 2 was that humans could make and control fire when they first migrated north to colder Europe, about a million years ago. But new research says those initial Europeans may not have been fire experts until much later. The study was published in the
Proceedings 3 of the National Academy of Sciences.
Archaeologists identify ancient open-air encampments through tools, tool production and food remains 4. To check for evidence of fire, they may look for charred 5 bones and pieces of charcoal 6. But those artifacts could be from volcanic 7 eruptions 8 or natural fires.
Such heated remains would be more clearly linked to humans when found in caves. Two northern European caves in particular show clear evidence of fire. But only relatively 9 recently compared with when humans first showed up.
And in the Arago cave in France there’s evidence of fire from settlements younger than 350,000 years, but no such evidence in the older layers. The scientists say these findings show that the use of fire was not controlled for the first 600,000 years after humans arrived in Europe, which made for quite a few long, chilly 10 winters.
Thanks for the minute. For Scientific American’s 60-Second Science, I’m Cynthia Graber
- Can we reach a consensus on this issue?我们能在这个问题上取得一致意见吗？
- What is the consensus of opinion at the afternoon meeting?下午会议上一致的意见是什么？
- He was released on bail pending committal proceedings. 他交保获释正在候审。
- to initiate legal proceedings against sb 对某人提起诉讼
- 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。
- 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》
- We need to get some more charcoal for the barbecue.我们烧烤需要更多的碳。
- Charcoal is used to filter water.木炭是用来过滤水的。
- There have been several volcanic eruptions this year.今年火山爆发了好几次。
- Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。
- There have been several volcanic eruptions this year. 今年火山爆发了好几次。 来自《简明英汉词典》
- Over 200 people have been killed by volcanic eruptions. 火山喷发已导致200多人丧生。 来自辞典例句
- The rabbit is a relatively recent introduction in Australia.兔子是相对较新引入澳大利亚的物种。
- The operation was relatively painless.手术相对来说不痛。