rut

[C] a boring way of life that does not change 刻板乏味的生活
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。
If you don’t go out and meet new people, it’s easy to get into a rut.
如果你不出门结识新朋友，你的生活就容易变得刻板乏味。