| 释义 |
base linen.（名词）- A line serving as a basis, as for measurement, calculation, or location.基线：基线，用于测量、计算或定位
- Baseball An area within which a base runner must stay when running between bases.【棒球】 垒线：棒球场垒间跑道，棒球比赛中限制跑垒员的垒间跑区
- Sports The boundary line at either end of a court, as in badminton or tennis.【体育运动】 底线：位于两条边线尽头的分界线，如在羽毛球、乒乓球中
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