[ti:Math Expert: All COVID Virus in the World Would Fit in a Soda Can] [by:www.51voa.com] [00:00.00]更多听力请访问51VOA.COM [00:00.04]A British math expert says all the COVID-causing virus [00:04.80]that currently exists in the world [00:07.44]could easily fit inside a single can of soda. [00:13.36]The finding shows just how much damage can be caused [00:17.52]by very small virus particles. [00:21.72]Christian Yates of the University of Bath [00:24.68]studied worldwide rates of new COVID-19 infections [00:28.92]and made estimates of the amount of virus [00:31.96]in an infected person's blood. [00:35.52]He found that there are about two quintillion - or two billion billion [00:41.56]- SARS-CoV-2 virus particles in the world at any one time. [00:48.72]Yates said he came up with that result [00:51.76]by measuring the distance across one virus particle [00:55.68]- about 100 nanometers, or 100 billionths of a meter. [01:02.16]He then found the total amount of space the virus takes up. [01:08.16]He said the total is still less than can be contained [01:12.04]in a single 330 milliliter soda can. [01:17.32]He noted that total includes the fact that the particles [01:21.12]will leave a lot of space in between when placed together. [01:27.00]"It's astonishing to think that all the trouble, the disruption, [01:31.48]the hardship and the loss of life that has resulted over the last year [01:36.48]could constitute just a few mouthfuls," [01:39.72]Yates said in a report on his findings. [01:44.28]More than 2.3 million people have died in the COVID-19 pandemic so far. [01:51.68]There have been about 107 million confirmed cases worldwide. [01:58.04]I'm Jonathan Evans. [01:59.68]更多听力请访问51VOA.COM