black hole

region in outer space from which no matter or radiation can escape 黑洞（任何物质或辐射均无从逃逸的外太空区域）.

bittersweet, bitty, bitumen, 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 ice, black magic, Black Maria, black mark, black market, black mass, Black Muslim, black out, black pepper, Black Power, black pudding, Black Sash, black sheep, black spot, black tie, black widow, black-beetle, black-out, black-water, blackamoor,