harum-scarum

He drove harum-scarum down the winding road.

用法提示：“harum-scarum”作为副词，修饰“drove”，表示轻率鲁莽地驾驶。

She spent her inheritance harum-scarum on useless gadgets.

用法提示：副词“harum-scarum”修饰“spent”，表示花钱轻率。

The children ran harum-scarum through the crowded market.

用法提示：“harum-scarum”修饰“ran”，形容奔跑的鲁莽状态。