widen out

• • (使)加宽，放宽，变宽：

    They decided to widen out the river to avoid the flooding.

    他们决定加宽河流以防洪水泛滥。

  • 扩大；扩充：

    Not only this system but that one needs widening out,too.

    不仅仅是这个系统，那个系统也需要扩充。