go a long way

Từ điển Oxford Advanced Learner 8th

go a long ˈway idiom
(of money, food, etc.)to last a long time
•She seems to make her money go a long way.
•A small amount of this paint goes a long way (= covers a large area).
• (ironic)I find that a little of Jerry's company can go a long way (= I quickly get tired of being with him).
Main entry: ↑long_idiom