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）一垒；一垒手的防卫位置 Mattingly played first base for the Yankees. 马丁利在扬基队任一垒手。 习语get to first base get to/reach first base 返回 first base