at best
US /æt ˈbest/
UK /æt ˈbest/
1.
充其量, 顶多
even in the most favorable circumstances; under the best possible conditions
:
•
The car will get 20 miles per gallon at best.
这辆车充其量每加仑能跑20英里。
•
His chances of winning are slim at best.
他获胜的机会充其量微乎其微。