like a headless chicken是指像没头的鸡，像无头苍蝇。就是指忙得像无头苍蝇，手忙脚乱。

【例句】
She's running around like a headless chicken. She needs to calm down and think of a plan.
看她那手忙脚乱的样子。她需要静下心来想一想接下来的计划。

Your work life consists of you running around like a headless chicken.
你工作起来总像只没头苍蝇似的到处瞎忙。