たたけばほこりがでる

叩けば埃が出る

表記・読み：叩けばホコリが出る・叩けば埃がでる・叩けばほこりがでる・たたけばほこりがでる

1. 1

   scratch the surface and you will find dirt; look close enough and you will find the flaws; hit something and dust comes out

   expressions (phrases, clauses, etc.)proverb