1 N-COUNT [usually singular] (网球场、羽毛球场、篮球场等的)底线 The baseline of a tennis, badminton, or basketball court is one of the lines at each end of the court that mark the limits of play. (网球场、羽毛球场、篮球场等的)底线
2 N-COUNT [usually singular] (棒球场的)垒线 In baseball, the baseline is the line that a player must not cross when running between bases. (棒球场的)垒线
3 N-COUNT [usually singular] 基线;基准 A baseline is a value or starting point on a scale with which other values can be compared. 基线;基准
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