bitumen

n [U] black sticky substance obtained from petroleum, used for covering roads or roofs 沥青.

bistro, bit, bit by bit, bit part, bitch, bitchiness, bitchy, bite, biting, bitingly, bits, bitten, bitter, bitter-sweet, bitterly, bittern, bitterness, bitters, bittersweet, bitty, bituminous, bivalve, bivouac, bizarre, bk, blab, blabber, blabbermouth, black, black and blue, black art, black box, black coffee, black comedy, black economy, black eye, Black Friar, black hole, black ice, black magic,