We drove, unimpeded by anyone, to Arras.

我们一路畅行至阿拉斯。

He promised to allow justice to run its course unimpeded.

他承诺要让司法正义不受阻碍地得到伸张。

U.N. aid convoys have unimpeded access to the city.

联合国救援车队可以畅通无阻地进入该市。