H-8：have had one's/its day 过时了
A:I want to buy a trpewriter.
A:我想买台打字机。
B:Don't be silly. The typewriter has had its day. Don't you know the computer has replaced it?
B:别傻了。打字机已经过时了。难道你不知道计算机已经替代打字机了吗？
A:But if there's a power failure, you can still work with it.
A:如果停电的话，用打字机还是可以工作的。
B:It depends on you.
B：随你吧。
