So I've got two calculators, because I'm going to do the two different basic reproduction numbers, the R-naughts, together.

我拿出了两个计算器，因为我要同时算两种不同基本传染数。

Okay, I'm still on the phone to Felicity but let's do number two.

好吧， 我还在给 Felicity 打电话，但让我们做第二件事。