You have no right to play ducks and drakes with money that has been entrusted to you.
你没权挥霍委托你保管的钱。
原声例句
少年维特之烦恼
I followed the course of a stream to a farm, formerly a delightful walk of mine, and paused at the spot, where, when boys, we used to amuse ourselves making ducks and drakes upon the water.