long suit
noun
1- (in bridge or whist) a holding of several cards of one suit in a hand, typically 5 or more out of the 13长套（桥牌或惠斯特中有五个或五个以上同花的一手牌）。
1.1
- usu. with negative an outstanding personal quality or achievement强项, 拿手戏：
tact was not his long suit.
耍手腕可不是他的强项。