剑桥词典in baseball , the first of four places you must run to after hitting the ball and before scoring a point , or the position of a player defending this place （棒球的）一壘；一壘手的防衛位置 Mattingly played first base for the Yankees. 馬丁利在敭基隊任一壘手。 習語get to first base get to/reach first base 返回 first base