drawback
/ˈdrɔːˌbæk/noun
1
- a feature that renders something less acceptable; a disadvantage or problem缺点, 欠缺; 不利条件, 障碍：
the main drawback of fitting catalytic converters is the cost.
安装催化式废气净化器的主要问题是费用太高。
2
- （亦作 duty drawback）an amount of excise or import duty remitted on goods exported出口退税。