及物动词
1. This narrow highway should be broadened.
这条狭窄的公路应该加宽。
2. Traveling broadens the mind.
旅行使人心胸开阔。
3. His face broadened out into a grin.
他咧开嘴笑了起来。
不及物动词
1. We broaden in experiences by traveling.
旅行增长我们的经验。
2. One's views broaden at college.
一个人的见解在大学时代变得开阔起来。
1. 放宽：broadcloth 细毛织品 | broaden 放宽 | broadish 稍宽阔的
2. 变宽：Exceeded 超过 | Broaden 变宽 | Encompass 包含
3. 加宽：strengthen加强 | broaden加宽 | weaken削弱
4. 扩大：broadcast 广播 | broaden 扩大 | build=建造
1. 变宽
When something broadens, it becomes wider.
e.g. The trails broadened into roads...
羊肠小道变成了宽阔的公路。
e.g. The smile broadened to a grin.
笑容变得更加灿烂。
2. 扩大…的范围；增长，增加（经验、受欢迎程度）
When you broaden something such as your experience or popularity or when it broadens, the number of things or people that it includes becomes greater.
e.g. We must broaden our appeal...
我们必须进行更广泛的呼吁。
e.g. I thought you wanted to broaden your horizons...
我想你是想拓宽自己的视野。
3. 开阔（心胸）
If an experience broadens your mind, it makes you more willing to accept other people's beliefs and customs.
e.g. They say that travel broadens the mind.
他们说旅行能够开阔心胸。
相关词组：broaden out
verb
1. become broader
e.g. The road broadened
2. make broader
e.g. broaden the road
3. vary in order to spread risk or to expand
e.g. The company diversified
Synonym: diversifybranch out
4. extend in scope or range or area
e.g. The law was extended to all citizens
widen the range of applications
broaden your horizon
Extend your backyard