widen

The construction crew worked all night to widen the narrow highway to four lanes.

(Chinese) 施工队整夜工作，将狭窄的高速公路加宽至四车道。

Reading books from different cultures can help to widen your perspective on the world.

(Chinese) 阅读来自不同文化的书籍可以帮助开阔你对世界的看法。