變環
go bad v 1: stop operating or functioning; "The engine finally went"; "The car died on the road"; "The bus we travelled in broke down on the way to town"; "The coffee maker broke"; "The engine failed on the way to town"; "her eyesight went after the accident" [syn: {fail}, {give way}, {die}, {give out}, {conk out}, {go}, {break}, {break down}] 2: become unfit for consumption or use; "the meat must be eaten before it spoils" [syn: {spoil}]