black economy

unofficial system of employing and paying workers without observing legal requirements such as the payment of income tax 黑市经营（对工人雇用及付酬不遵守缴纳所得税等法规的做法）: The growing black economy is beginning to worry the Government. 黑市经营日益泛滥, 政府已开始担忧.

bittern, bitterness, bitters, bittersweet, bitty, bitumen, bituminous, bivalve, bivouac, bizarre, bk, blab, blabber, blabbermouth, black, black and blue, black art, black box, black coffee, black comedy, 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, black tie, black widow, black-beetle,