To have a very limited outlook or perspective; to be narrow-minded due to lack of experience or exposure.
如果你总是不出门旅行，不接触新事物，那就会像坐井窥天一样，眼界非常狭窄。
If you never travel and never encounter new things, you'll be like someone looking at the sky from the bottom of a well, with a very narrow perspective.
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