Radiocarbon analysis suggests the wood vessel dates back to 400 B.C.

放分析显示，这艘木制船舶来自公元前400年。

Scientists at Oxford University have carried out the first radiocarbon dating.

牛津大学科学家首次对骨头进行了放定年法。

You see, that shower of cosmic rays created an abundance of radiocarbon.

那次宇宙线簇产生了大量放。

If so, this could have changed the radiocarbon test result by thousands of years.

如果是那样的话，这可能会使放测试结果有数千年的变化。

Radiocarbon dating provides a range, often spanning 200 years or more, rather than an exact date for a site.

采用放技术来测定一处考古遗址的年代，到的并不是一个准确日期，而是一个时间跨度范围通常为200年或更久远的数值。

The centers of the lenses can be analyzed by radiocarbon dating to determine about when the shark was born.

可以通过放分析镜片的中心，来决定生的时间。

She added that scientists believe radiocarbon dating land plants gives more correct results than dating plants living in water.

她补充说，科学家认为放定年法测定陆地植物的年代比测定水中植物的年代更准确。

Tom, in your archaeology class, did you talk about radiocarbon dating?

汤姆，在你的考古课上，你谈到过放测年吗？

Her team used radiocarbon dating to calculate the fossils' age.

她的团队使用放测年法来计算化石的年龄。

To get a definitive answer, the research team takes three samples from the wreck and radiocarbon dating confirms its ancient origins.

为了到肯定的答案，研究团队从残骸上取了三个样本，放定年法确认了它的古老来源。

The next step is to use a process called radiocarbon dating to find a more exact date of when the person lived.

下一步是使用放定年法来更准确地确定这个人生活的时期。

" Scotch whiskey is Scotland's product, and we felt that being a radiocarbon laboratory in Scotland, we should take a lead on this."

“苏格兰威士忌是苏格兰的产品，作为苏格兰的放实验室，我们应该带头研究这个问题。”

However, in the mid-20th century, radiocarbon dating demonstrated that Stonehenge stood more than 1,000 years before the Celts inhabited the region.

然而，在 20 世纪中叶，放测年表明巨石阵的存在早于凯尔特人居住该地区 1000 多年。

Radiocarbon dating has revealed that work continued at Stonehenge until roughly 1600 BCE, with the bluestones in particular being repositioned multiple times.

放测年显示，巨石阵的工作一直持续到大约公元前 1600 年，尤其是青石被多次重新定位。

And based on radiocarbon dating of other organic materials in the permafrost sample,they consider it to be between 20,000 and 30,000 years old.

霍普金：根据永久冻土样品中其他有机材料的放测年，他们认为它的历史在 20,000 到 30,000 年之间。

The research team used radiocarbon dating and other techniques to precisely pin down the layers in which camel bones are found at a number of sites.

研究团队采用了放同位素标记法及其它技术来对于骆驼骨架遗骸的地点进行精确地层定位。

Scientists were the able to radiocarbon date the remains of the villagers to around 1900 BCE. This is where the founding of a civilization part comes in.

科学家们能够用放测定村民遗骸的年代，时间为公元前 1900 年左右。这就是建立文明部分的用武之地。

And there’s so much more we could talk about if we had the time! Half-lives, radiocarbon dating, the basics of nuclear power, just to name a few.

如果有时间，我们还有很多可以谈的！半衰期、放测年、核能基础知识等等。

When taken up by trees, it left a lasting signature in tree rings—giving the scientists a key to pinpoint the year 993 in the three wood samples using radiocarbon dating.

被树木接受后，放会在年轮上留下持久的特征，而这给了科学家们一把密匙，使其利用放定年法确定三份树木样本的年份是993年。

When taken up by trees, it left a lasting signature in tree rings—giving the scientists a key to pinpoint the year 993 in the three wood samples using radiocarbon dating.

当被树木吸收时，它会在树木年轮中留下持久的印记——这为科学家们提供了一把钥匙，可以使用放测年法在三个木材样本中查明 993 年。