bottomless

a.无限的；取之不尽的

botcher, both, both...and, both...and..., bother, botheration, bothersome, bottle, bottle bank, bottle-feed, bottle-green, bottle-neck, bottle-opener, bottle-party, bottleneck, bottler, bottom, bottom drawer (US hope chest), bottom line (infml 口), bottom-line, bottommost, botulism, boudoir, bouffant, bougainvillaea, bough, bought, bouillon, boulder, boulevard, bounce, bouncer (also bumper), bouncing, bouncy, bound, boundary, bounded, bounden, bounder, boundless,