baseline

n (sport 体) line marking each end of the court in tennis or the boundary of the running track in baseball （网球场的）底线; （棒球场的）垒线. =>illus at tennis 见tennis之插图.

barrier, barrier cream, barrier reef, barring, barrio, barrister, barrow, barrow boy, Bart, bartender, barter, bas-relief, basalt, base, base on (upon), base rate, baseball, baseboard, based on, baseless, basely, basement, baseness, bases, bash, bashful, bashfully, bashfulness, bashing, basic, BASIC (also Basic), basic slag, basically, basics, basil, basilica, basilisk, basin, basinful, basis,