A scientist at the forefront of an international effort to track the deadly coronavirus outbreak has shot down claims about the disease’s origins, including that it escaped from a Wuhan laboratory after being genetically engineered.
处于追踪致死的新型冠状病毒(COVID-19)疫情国际队伍一线的一名科学家驳斥了有关这种病毒起源的种种说法,包括该病毒是在经过基因工程改造后从武汉的一个实验室外泄出来的说法。
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