(棒球或垒球)在内野比赛的人。
(baseball or softball) a person who plays a position in the infield.
许多家庭和朋友们在周末和假日聚在一起到公园或宽敞的空地上打棒球或垒球。
Many families and groups of friends get together on weekends and on holidays and play baseball or softball in parks and in spacious lots.
纵观这些有助于提高击球速度的因素，力量教练要用具备的科学研究信息去帮助棒球或垒球运动员增强其击球速度制定抗阻训练方案。
Moreover, the use of additional resistance worn on the forearm while swinging a baseball bat did not contribute to further increases in instantaneous bat swing velocity and batted-ball velocity.
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