The most frequently used method is radiocarbon dating.
最常用的方法是放射性碳定年法。
Tom, in your archaeology class, did you talk about radiocarbon dating?
汤姆，你在考古学课上有没有讨论过放射性碳年代测定法？
It turns out that radiocarbon dating works for a lot of prehistoric art.
事实证明，放射性碳年代测定法适用于许多史前艺术品。
Radiocarbon dating shows that the charred wood in Terra Preta soils is typically more than 1,000 years old.
放射性碳年代测定法显示，亚马逊黑土中被烧焦的木头通常有1000多年的历史。
Radiocarbon dating had to do with chemical analysis, something to do with measuring the amount of radiocarbon that's left in organic stuff.
放射性碳年代测定法涉及到了化学分析，与文物中残留的有机物成分所释放的放射性碳的含量测定有关。
Evidence that an ice-free corridor between two ice sheets developed when the continental ice first began to melt came primarily from radiocarbon dating.
当大陆上的冰开始融化时，两块冰原之间形成了一条无冰走廊，这一证据主要来自放射性碳测年法。
Radiocarbon dating of fossils taken from caves on islands along southeastern Alaska's coast suggest that at least a portion of the area was remaining ice-free during the last ice age.
从阿拉斯加东南海岸岛屿的洞穴中提取的化石的放射性碳年代测定法表明，在最后一个冰河时代，该地区至少有一部分保持无冰状态。
And its use in radiocarbon dating.
它使用于放射性碳年代测定法。
All living things contain radiocarbon.
所有生物都含有放射性碳。
Radiocarbon dating places the site at ca.
放射性碳测年地方网站在CA。
The material in this beach has been dated by radiocarbon.
这个海滩上的物质经过放射性碳测定。
Researchers use radiocarbon to study certain biological processes.
研究人员借助放射性碳来研究某些生物过程。
Radiocarbon dating in 1988 showed the cloth was made between 1260 and 1390.
放射性碳年代测定法显示，那块布料产于1260年与1390年之间。
So it turns out that radiocarbon dating works for a lot of prehistorical art.
所以放射性碳年代测定对许多史前艺术有用。
Radiocarbon dating showed that the head's age matched the king's date of death.
放射性碳显示这个头颅的年龄符合国王的死期。
Various labs are doing radiocarbon-dating of the bones to more precisely date them.
不同的实验室正在对这些猛犸象骨骼进行放射性碳测定，以更加精确地得知这些化石的年龄。
Sometimes atmospheric radiocarbon levels remain constant for many decades, even centuries.
有时候大气原因会使碳素十年甚至百年保持稳定。
Radiocarbon dating experts have also found advantages from working onsite with archaeologists.
放射性碳测定年代的专家们还发现了在考古现场工作的各种优点。
Because we know how fast radiocarbon decays, we can figure out the age of the organic material.
因为我们知道放射性碳分解有多快，我们就能计算出有机材料的年龄。
"You can find evidence in radiocarbon for David being a villager in Norway in the sixth century A.D.!
“如果这样说，你甚至可以在一个公元前6世纪的挪威村庄遗址中发现能证明所谓大卫时代的放射性碳证据！”
Radiocarbon dating provides a range, often spanning 200 years or more, rather than an exact date for a site.
采用放射性碳技术来测定一处考古遗址的年代，得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。
Virtual Dating Radiocarbon (Carbon-14) applies to once-living materials that are less than 50,000 years old.
虚拟测年放射性碳（碳14）模型应用于测量年龄小于50000年的物质。
Bacteria and bacterial residue carry additional carbon and would skew the radiocarbon date toward the present.
细菌和细菌性残余带来额外的碳，会使现时测定的年代变得不准确。
Radiocarbon of soil organic matter (SOM) in Dinghushan subtropic forest has been adjusted by the "bomb-effect".
对鼎湖山亚热带森林土壤有机质(SOM)放射性碳进行了核爆效应校正。
If the claims of this testimony are correct, it would be consistent with the radiocarbon dating of the shroud (see below).
如果这个见证的声称是真实的话，那么裹尸布的放射性碳年代测定将会相互一致(见下)。
Using the technique of radiocarbon dating, they all agreed that the cloth dated to the 13th or 14th century (1260 to 1390).
他们使用放射性碳年代测定法，都同意布料是回溯到十三或十四世纪(1260年到1390年)。
"Many of the radiocarbon dates for this period cover exactly the range that's under debate," Amihai Mazar says, chuckling wearily.
“很多针对这一时期的放射性碳年代测定的精确范围都存在争议，”阿米哈伊·玛扎尔说着便有些厌倦的轻笑起来。
They had to do with chemical analysis, something to do with measuring the amount of radiocarbon that's left in organic stuff.
它们与化学分析有关，与测量有机体留下来的放射性碳数量有关。
Radiocarbon dating of the bones of three children killed by the earthquake establish that the event took place around 1920 B. C.
用放射性碳测年法对在地震中丧生的三名儿童的遗骸进行检测后，研究者确定洪水大约发生在公元前1920年。
Accelerators also used for radioisotope production, cancer therapy, Biological sterilization, and one form of radiocarbon dating.
加速器也用于制造放射性同位素、治疗癌症、生物消毒及放射性碳定年。
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