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}]