Now, to ruminate means to chew over. The word refers to how cows digest their food.

反刍的意思是反复咀嚼。这个用词指的是奶牛消化食物的方式。

RM: This, too, is a fine question. It's exactly the kind of thing I want people to chew over the next few months.

这也是一个很好的问题。这正是我想让大家在接下来的几个月中认真推想的事情。