The bat judges distances by a kind of echo-location.

蝙蝠用一种回声法来判断距离。

Well, I know we start by discussing the shortcomings of carbon dating.

我知道我们一开始 是讨论碳年代法的缺点。

Almost 100 years later, Rosalyn Yalow, a medical physicist, and Solomon Berson, a physician, invented the radioimmunoassay in 1960.

将近 100 年后，医学物理学家罗莎琳·亚洛和内科医生所罗门·伯森在 1960 年发明了放射免法。

Clinical specimens were tested with an rRT-PCR assay that was developed from the publicly released virus sequence.

用根据公开发布的病毒序列开发的 rRT-PCR 法对临床标本进行试。

He said carbon dating methods were used to link the footprint to the same time period as plant material found in the area.

他表示通过碳年代法将这枚足迹与该地区发现的同时代植物化石进行了联系比较。

The result is Spiroscout, an inhaler with a built-in Global Positioning System locator and (in advanced models) a wireless link to the internet.

其结果就是一款名为肺量法侦察员的吸入器问世，这款吸入器带有内置的全球位系统位和（高级型）联到互联网的无线连接。

The lack of radio-carbon dating and the fact that the land above it has never been part of a large estate make the origins of the site a mystery.

由于缺乏放射性碳年代法， 而且其上方的土地从未成为大型庄园的一部分， 这得该遗址的起源成为一个谜。