To " put something aside" means to save it for a later time.

“把某事放在一边” 意味着把它留到以后再用。

He knew that she was putting something aside, and when she told him that year by year she was buying a bit of land in her native village, he felt a thrill of pride.

他知道她在搁置一些东西，当她告诉他，她年复一年地在家乡买地时，他感到一阵自豪。