We also finally got a PO Box, for all of you amazing science lovers who have requested to send us mail or other stuff over the years.

我们也终于有了一个邮政信箱，为所有这些年来一直要给我们写信或寄其他东西的科学爱好者们所建的。

Then he bought stamps at the desk and slipped the envelope down the slot marked 'US Mail' and hoped that there, in the most sacrosanct repository in America, it would be safe.

然后他在办公桌上买了邮票， 把信封塞进标有“美国邮政”的邮槽，希望在美国最神圣的仓库里，它是安全的。