《环球时报》记者近日，媒体曝光了越来越多美国在溯源问题上令人疑惑不解的地方，比如对要求调查 德特里克 堡的呼声始终没有回应。近日，媒体曝光的德特里克堡卫星照片显示，自2020年3月至今年8月期间，也就是新冠肺炎疫情在美国肆虐之时，德特里克堡基地却大兴土木，开垦了新的建筑用地并有建筑物移动的明显痕迹。俄罗斯国际事务理事会主任等人都表示，美国情报界鼓动溯源调查的终极目的就是转移对美抗 疫 不力的注意并归咎于中国，这在本质上是错误的。请问中方对此有何评论？

Global Times In recent days, the media have exposed more and more questionable points of the US on origins tracing. For example, the US has yet to respond to calls for an investigation into Fort Detrick. Satellite photos of released by the media also show that from March 2020 to August 2021, when the COVID-19 has been ravaging the US, construction was underway at Fort Detrick, with new land cleared for construction and structures obviously reconstructed. Director General of the Russian International Affairs Council (RIAC), among others, said that the investigation led by the US intelligence community into COVID-19 origins has a clear end-goal of diverting attention from the country's pandemic response failures and casting blame on China, which is inherently wrong. Do you have any comment?

中国和世界各国一样，都是疫情受害者，都希望尽快找到病毒源头，阻断疫情传播。但是溯源工作不能“灯下黑”，不能人为设置盲区，更不能出于政治目的搞恶意栽赃和有罪推定，这也正是国际社会的广泛共识。

Like other countries, China is a victim of the COVID-19 outbreak and hopes to find the source of the virus and stem the transmission of the epidemics as soon as possible. Having that said, there should be no artificially created blind spot in origins tracing work, still less malicious false accusations and presumption of guilt for political purposes. This is a widely shared consensus of the international community.

素有“冠状病毒猎手”之称的美国北卡罗来纳大学教授巴里克和他的病毒改造技术：

"The Coronavirus Hunter", Professor Ralph Baric of the University of North Carolina and his virus modification technique:

据美国《麻省理工科技评论》杂志报道，巴里克教授掌握一种通过“反向遗传技术”能改造乃至“增强”冠状病毒的技术。凭借该项技术，他不仅可以依据冠状病毒的基因片段培育出活生生的病毒，还可以改造冠状病毒的基因，创造出新的冠状病毒。

According to the MIT Technology Review, Baric has acquired a technique called "reverse genetics" with which he could modify coronaviruses or make them more potent. With the support of this technique, Baric can not only cultivate a living virus based on the gene fragments of the coronaviruses, but also modify the genes of the coronaviruses and create new ones.

这项独特的病毒技术，令巴里克教授成为美国最顶尖的冠状病毒专家，他凭借该技术在全世界搜集各种冠状病毒的样本进行研究。比如在2013年，当中国武汉病毒所科学家石正丽和她的团队从云南的蝙蝠洞里获得几种冠状病毒的基因后，巴里克教授主动找到石正丽，希望获得这些冠状病毒的样本进行研究。石正丽非常慷慨地把自己的发现分享给了巴里克，巴则在美国实验室里用他的病毒改造技术造出了一种全新的、可以感染人类的冠状病毒。这项研究中，病毒改造和小鼠感染实验均在北卡罗来纳大学开展，所构建的嵌合病毒并没有提供给石正丽团队。这一研究结果2015年发布在了国际学术期刊《自然》杂志上。

This unique technique made Baric the top expert on coronaviruses in the US. He then began collecting samples of various coronaviruses around the world for research. In 2013, when the team of Shi Zhengli, a Chinese scientist at the Wuhan Institute of Virology, detected the genome of a new coronavirus from a bat cave in Southwest China's Yunnan Province, Baric approached her, hoping to obtain the genetic data for research. Shi generously shared her findings with Baric. With his virus modification technique, Baric and his team created in his laboratory in the US a new coronavirus that can infect humans. In this research, the modification and the mice infection experiment were both conducted in the University of North Carolina. The constructed chimeric virus was not provided to Shi Zhengli's team. The research result was published in the "Nature Medicine" journal in 2015.