fish out of water   (TTS發音)

a person who is out of his proper place in life； someone who doesn't fit in如魚離水；感到生疏；不自在

    She was the only girl at the party not in a formal dress and she felt like a fish out of water. 她在晚會上是唯一沒有穿禮服的女孩，因此覺得很不自在。

    A new boy feels like a fish out of water when he first goes to school. 新學童初上學時，總是感到很不習慣。

    When he was away from his colleagues， he felt like a fish out of water. 離開了他的同事們，他感到如魚離水一樣，感到生疏。