n.黑社會(huì)；下層社會(huì)；陰間；地球
Drug traffic is controlled by the underworld. 毒品生意為黑社會(huì)所控制。
He looked like a shifty underworld character. 他看起來是個(gè)鬼頭鬼腦的下流社會(huì)的角色。
