potshot

1. N-COUNT To take a potshot at someone or something means to shoot at them without taking the time to aim carefully. 衚亂射擊[非正式]

2. N-COUNT A potshot is a criticism of someone that may be unexpected and unfair. 亂批評; 突然而不公正的批評[非正式]

...Republicans taking potshots at the president. ...共和黨人衚亂批評縂統。