im-,不，非，passable,可通过的。

1. Many streams have flooded their banks, making some roads impassable.

许多小河的水已经漫过堤岸，造成一些道路不能通行。

来自柯林斯例句

2. The mud made the roads impassable.

道路因为泥泞而无法通行.

来自《简明英汉词典》

3. In ancient mythology there was no impassable gulf separating the divine from the human beings.

在上古神话中,神与人之间没有不可逾越的鸿沟.

来自《现代汉英综合大词典》

4. There was an impassable barrier between the white race and the one which they had reduced to slavery.

在白色人种和被他们奴役的种族之间有一道不可逾越的障碍.

来自《简明英汉词典》

5. The avenue had never been paved, and deep mud made it impassable in winter.

这条大街从未铺过路面，冬天泥泞不堪，无法通行。

来自辞典例句