Heavy spring rains had turned the dirt roads into rivers of mud.

VOA: special.2009.09.17

Our vehicles sink into wet roads and crush dry roads because they are too big and heavy.

我们的车子因为笨重,陷入泥路中，在干道路上被压碎。

普林斯顿公开课 - 国际座谈会课程节选

Our vehicles sink into wet roads and crush dry roads because they are too big and heavy.

我们的车子因为笨重,陷入泥路中，在干道路上被压碎。

普林斯顿公开课 - 国际座谈会课程节选