Ever since the innovation of internet, the communication between people has become lot easier. No matter where they are, people can find one another by just a click away. On the other hand, some traditional method of communication such as using letter paper has been getting phased out these days. Sending people a card may go the way of dinosaurs. There is no denying that they becoming things of the past is a matter of time.
How long haven't you dropped your close friend a line?
phase out 逐步消失
go the way of dinosaurs 變落伍
There is no denying that... 不可否認的是...
drop someone a line 寫信給某人