first base
1 first of the bases (base1 6) that must be touched in a game of baseball (棒球运动中的)一垒.
2 (idm 习语) not get to first base (with sth) (infml 口 esp US) not make a successful start (in a project); not even achieve the first step 不能顺利开始(一项计画); 连第一步也迈不出.