Definition
to resume an activity or task that you had been engaged in previously
重新开始做某事；重拾旧业
After the summer break, I plan to go back to learning the guitar.
暑假过后，我打算重新开始学习吉他。
She has made new progress at work, but she still wants to go back to the old project.
她在工作上取得了新的进展，但她仍然想回去做旧的项目。
We can go back to this topic after the forum concludes.
我们可以在论坛结束后再回到这个话题。