屋上屋を架す おくじょうおくをかす to do something useless; to gild the lily; to gild refined gold; to build a roof atop the roof exp v5s id Advanced ➥
屋上屋を架す おくじょうおくをかす to do something useless; to gild the lily; to gild refined gold; to build a roof atop the roof exp v5s id Advanced ➥