That was one of their key arguments.

这是他们的主要论点之一。

A key argument of Mr Pence and President Donald Trump, even as case counts were rising through June, was that this was an artefact of increased testing and that the death rates continued to decline.

彭斯先生和唐纳德·特朗普总统的一个关键论点是，尽管6月份的病例数一直在上升，但美国扩大了检测，这是人为造成的，还有死亡率会继续下降。