black box

automatic device for recording details of the flight of a plane 黑盒（记录飞机飞行详情的自动装置）.

bitter, bitter-sweet, bitterly, bittern, bitterness, bitters, bittersweet, bitty, bitumen, bituminous, bivalve, bivouac, bizarre, bk, blab, blabber, blabbermouth, black, black and blue, black art, black coffee, black comedy, black economy, black eye, Black Friar, black hole, 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,