[no obj.]become larger in distance from side to side; widen (使)变宽,扩大 her smile broadened. 微笑在她脸上荡漾开来。 the river slowed and broadened out slightly. 水流的速度减慢,河面也稍微变宽了点。 ■expand to encompass more people, ideas, or things 变开阔,扩大(以容纳更多的人,观点或事) her interests broadened as she grew up. 随着年龄的增长她的兴趣变广了。 [with obj.]he has to broaden Labour's appeal to the whole community. 他不得不在整个社区扩大工党的吸引力。
常用词组 broaden one's horizons
expand one's range of interests, activities, and knowledge 开阔眼界;扩大兴趣、活动范围和知识面