It was not possible to prove conclusively that transmission is impossible, however the commission reported that scientific evidence showed the risk to be "negligibly small".21.
没有确切证据可以证明不可能发生传播，但该委员会报告声称，有科学证据表明，感染的风险“微乎其微”。
It was not possible to prove conclusively that transmission is impossible, however the commission reported that scientific evidence showed the risk to be "negligibly small". 22.
没有确切证据可以证明不可能发生传播，但该委员会报告声称，有科学证据表明，感染的风险“微乎其微”。
According to paleobiologist Jessica Whiteside of Brown University, a leading researcher on end-Triassic vulcanism, more evidence is needed before Ruhl’s interpretations are conclusively supported.
美国布朗大学古生态学家杰茜卡-怀特塞德曾经主持了一项关于晚三叠纪时期火山活动的研究。 怀特塞德认为，鲁尔的研究成果要想得到广泛的支持，必须要寻找更多的证据来提供更为合理的解释。
According to paleobiologist Jessica Whiteside of Brown University, a leading researcher on end-Triassic vulcanism, more evidence is needed before Ruhl’s interpretations are conclusively supported.
美国布朗大学古生态学家杰茜卡-怀特塞德曾经主持了一项关于晚三叠纪时期火山活动的研究。 怀特塞德认为，鲁尔的研究成果要想得到广泛的支持，必须要寻找更多的证据来提供更为合理的解释。
应用推荐