屋上屋を架す | [おくじょうおくをかす, okujouokuwokasu] (exp, v5s) (See 屋上架屋) to do something useless; to paint the lily; to gild refined gold; to build a roof atop the roof [Add to Longdo] |
You're wasting your time with all this needless repetition so spare us the long-winded explanation. | 同じことを何回繰り返すの。屋上屋を架すようなくどい説明は勘弁してよ。 |