idiom · To feel frustrated or incompetent when faced with a task beyond one's ability or resources.

面对如此昂贵的房价，普通工薪阶层只能望洋兴叹。

idiom · To gaze at the ocean and lament one's insignificance or inadequacy in comparison to its vastness.

庄子在《秋水》中描述河伯见到大海，只能望洋兴叹。