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I gave up my job because I felt I was stuck in a rut.

我放弃了我的工作，因为我觉得那种生活呆板无聊。

《牛津词典》

I don't like being in a rut – I like to keep moving on.

我不喜欢一成不变–我喜欢不断前进。

《柯林斯英汉双解大词典》

they get in a rut and they can't get back up.

他们就栽进去了，出不来了。

不要放弃 - SpeakingMax英语口语达人

Since you pursue new experiences with some regularity, you are not in a rut.

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My wife and I, together for more than twenty years, have settled into a rut.

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No one wants to be pigeonholed or seen as static or stuck in a rut.

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