•The track broadens and becomes a road at this point.小道逐渐拓宽，到这里就成了一条马路。

•They are broadening the bridge to speed up the flow of traffic.他们正在拓宽大桥以提高交通流量。

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•They've introduced all sorts of new elements to that programme in order to broaden its appeal.他们已经给那个节目加入了各种新元素以增强其吸引力。

•I hoped that going to university might broaden my horizons (= increase the range of my knowledge and experience).我希望上大学能使我增长见识。

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•The river broadens out around the next bend.河流在下一个拐弯处变宽了。