a thing of the past

US /ə θɪŋ əv ðə pæst/
UK /ə θɪŋ əv ðə pæst/
"a thing of the past" picture
1.

过去的事情, 过时了

something that no longer exists or happens

:
Dial-up internet is definitely a thing of the past.
拨号上网绝对是过去的事情了
Using typewriters for daily office work is a thing of the past.
在日常办公中使用打字机是过去的事情了