翻译：在超市人们会情不自禁去买根本不需要的东西。(cannot)

In supermarkets people cannot help buying things that they don't need at all .

People cannot help but buy things they don't even need in supermarkets.

People can't help buying the things that they don't need at all.

事先考虑好 列好要买的东西的单子
对打折商品一定要对照购物单购买
P.S.
建议在家中冰箱上贴个便签 平时做事的时候想起来了就记下要买的东西

这句也太容易翻了吧，但是楼上的答案很搞哎

People usually can't help buying things never needed in the supermarket.