Just keep in mind that open-mindedness broadens your horizons .

铭记在心，思想开放可以拓宽你的视野。

It is common knowledge that travel broadens the mind .

旅行能拓宽视野这是众所周知的事.

I feel it broadens my thought .

我觉得给我开阔了思路。

The road broadens out at this point .

这条马路在这里开始变宽。

It is believed ( that ) reading increaes our knowledge and broadens our mind .

例∶一般相信阅读增加我们的知识、扩大我们的心胸。