base on (upon)

以…为基础，把基础…放在

barrage, barrel, barrel-organ, barren, barrenness, barricade, barrier, barrier cream, barrier reef, barring, barrio, barrister, barrow, barrow boy, Bart, bartender, barter, bas-relief, basalt, base, base rate, baseball, baseboard, based on, baseless, baseline, basely, basement, baseness, bases, bash, bashful, bashfully, bashfulness, bashing, basic, BASIC (also Basic), basic slag, basically, basics,