I'm glad I ran into you. Where have you been hiding lately?
我很高兴碰见你,你躲到哪里去了?
Kill two birds with one stone.
一举两得。
Considering how recent these developments are, it is even more remarkable that as long ago as the 1960s, an Englishman, Leon Bagrit, was able to predict some of the uses of computers which we know today.