squirrel something away
phrasal verb with squirrel verb uk/ˈskwɪr.əl/ us/ˈskwɝː.əl/
informal
储藏，储存（尤指钱，供日后使用）
to hide or store something, especially money, in order to use it in the future
As soon as I get paid, I squirrel some money away so I won't be tempted to spend it. 我一发薪水，就存起来一部分，以免忍不住想花。