We have to cut corners.
→ 좀 줄여야할 필요가 있어.

 “cut corners" :줄이다(ex>소비를, 음식을, 담배를.. 등등)

※cut corners = find another way that is cheaper

[예문]
I'm spending all my money. I must cut corners.
난 돈을 다 써버렸기 때문에 좀 줄여서 써야한다