boulder

n.大石块

bottle-feed, bottle-green, bottle-neck, bottle-opener, bottle-party, bottleneck, bottler, bottom, bottom drawer (US hope chest), bottom line (infml 口), bottom-line, bottomless, bottommost, botulism, boudoir, bouffant, bougainvillaea, bough, bought, bouillon, boulevard, bounce, bouncer (also bumper), bouncing, bouncy, bound, boundary, bounded, bounden, bounder, boundless, boundlessly, bounds, bounteous, bounteously, bounteousness, bountiful, bountifully, bounty, bouquet,