/ˈbrɔːdən/🄰 vt.
+ appeal, scope, horizon拓宽；扩大；使宽阔
We must broaden our appeal.我们必须吸引更多人。
I thought you wanted to broaden your horizons.我原以为你想要开阔视野。
We'll broaden the discussion out in a minute.我们很快将扩大讨论范围。
🄱 vi.
1.river +变宽；spectrum +扩大；smile +变灿烂
As we drove towards Chamdo, the river broadened.我们驶近昌都时, 河面越来越宽。
The smile broadened to a grin.笑容变得更加灿烂, 嘴巴也咧开了。
The political spectrum has broadened.政治范围扩大了。
2.to broaden your/the mind使开明；使开化；使心胸开阔
They say that travel broadens the mind.他们说旅行可以使人胸襟开阔。