疏导的英文：
to dredge
to open up a path for
to remove obstructions
to clear the way
to enlighten
persuasion

参考例句：

Otherwise, inundation would ensue to our dismay.
若不疏导，只能眼巴巴看着它泛滥。

The engineers channeled the water off without difficulty.
工程师们毫不费力地就把水疏导走了。

Ring road(road built around a town to reduce traffic in the centre )
环路,环城公路(为疏导城市中心区之交通而设).

open是什么意思：
adj. 打开的；开着的；空旷的；可利用的；公开的；坦率的；愿意接受的
n. 旷野，空旷之地；露天，户外；野外
v. 开，打开；睁开；张开；展开；开始；使开张；开业；展现

They are open to temptations.
他们容易受诱惑。

The flowers are opening.
花正在开放。

an open package
未封上的包裹

path是什么意思：
n. 小路；路线；行动计划

The path of duty is the path of safety
尽职的路是安全的路

strike one's path
朝...方向进; 取道前进

A route or path across or over.
横向路横越或横跨的路线或道路