gnash your teeth

釋義

1. （尤因不獲所求而氣得）咬牙切齒

   to feel very angry and upset about sth, especially because you cannot get what you want

   He'll be gnashing his teeth when he hears that we lost the contract.他要是聽說我們丟了這份合同，準會氣得咬牙切齒。