n.棒球(运动);
例句:
He umpired baseball games.
他担任棒球比赛的裁判。
Two boys were in the street, tossing a baseball back and forth.
两个男孩在街上来来回回地投接棒球。
He's wearing a deeply unappealing baseball hat.
他戴着一顶很不起眼的棒球帽。