add fuel to the fire 火上浇油，推波助澜，添油加醋

fuel 燃料

The decision will only add fuel to the fire.

这个决定只会火上浇油。

Mike was late for work again. No doubt, that added fuel to the fire.

麦克上班又迟到了，毫无疑问，这只会让情况更糟糕。