" But the upper limit is really very difficult to judge, " Mr. Musson says.

“但是上限非常难以判断，”Musson说。

Roger Musson of the British Geological Survey says the problem is what to do with that water. Mr. Musson spoke to VOA by telephone.

英国地质调查局的Roger Musson表示，问题是如何处理废水。Musson通过电话接受了VOA采访。

" This is being debated very urgently by seismologists, " Roger Musson says. Currently, scientists believe that wastewater injection can produce earthquakes in the magnitude 4 or 5 range.

“地震学家非常迫切地讨论这个问题。”Roger Musson表示。目前，科学家相信，废水注入会造成4.0至5.0级的地震。