go unnoticed
not to be noticed eg:Hard work hardly go unnoticed. 双重否定加强表达效果
go un_句型
人们不会对善良视而不见 Kindness hardly go unnoticed.
你的努力不会没有回报 Your efforts will not go unrewarded.
outlive
live or last longer than
outlive one's usefulness=nolonger useful 表示某人或某物不再有用时使用
eg. The one chlid policy had outlived its usefulness. 计划生育政策已经没用了（由于该政策已经废除 所以过去完成时）
传统方法已经行不通了 The traditional approach has outlived its usefulness.
这座电站从上世纪80年代起就没用了 This power station has outlived its usefulness since 1980s.
