go back
phrasal verbgo back
- if two people go back a period of time (usually a long time), they have known each other for that time
相识，已认识（一段时间） - Dave and I go back twenty years.
我和戴夫相识有二十年了。
- Dave and I go back twenty years.
- when the clocks go back at the end of summer time, the time on them is changed so that it is one hour earlier
（在夏令时结束时钟表）回拨一小时 - Don't forget—the clocks go back tonight.
别忘了今晚钟表要回拨一小时。
- Don't forget—the clocks go back tonight.
go back (to…)
- to return to a place
回到，返回（某地） - She doesn't want to go back to her husband (= to live with him again).
她不想回到丈夫的身边了。 - This toaster will have to go back (= be taken or sent back to the shop it was bought from)—it's faulty.
这烤面包机得退回去，它有毛病。 - Of course we want to go back some day—it's our country, our real home.
我们当然希望有一天能回去，那是我们的祖国，我们真正的家。
- She doesn't want to go back to her husband (= to live with him again).
go back (to something)
- to consider something that happened or was said at an earlier time
回忆起；回到（原来的话题） - Can I go back to what you said at the beginning of the meeting?
我想回到你在会议开始时所提的话题，行吗？ - Once you have made this decision, there will be no going back (= you will not be able to change your mind).
你一旦作出这个决定就不能改变。
- Can I go back to what you said at the beginning of the meeting?
- to have existed since a particular time or for a particular period
追溯到；回溯到 - Their family goes back to the time of the Pilgrim Fathers.
他们家族的渊源可追溯到清教徒前辈移民时代。
- Their family goes back to the time of the Pilgrim Fathers.