The serrate stone tore his skin.锯齿状的石头划破了他的皮肤。Plants sparsely scabrous; ultimate leaf segments irregularly serrate or dentate.装置疏生粗糙; 不规则的末级的叶裂片有锯齿或具牙齿....
There was a stream of refugees trudging up the valley towards the border.一队难民步履艰难地爬上山谷向着边境走去.Two mules well laden with packs were trudging along.两头骡子驮着沉重的背包,吃力地往前走.We are trudging a plain high road.我们正徒步跋涉在平坦的大道上....