It caused devastation by burrowing and by devouring the herbage which might have maintained millions of sheep and cattle.

它们在地下打洞，吃掉本可以饲养数百万头牛羊的牧草，给澳洲大陆造成了毁性的破坏。

To a walker practised in such places a difference between impact on maiden herbage, and on the crippled stalks of a slight footway, is perceptible through the thickest boot or shoe.

对于在这种地方行走的人来说，即使穿多厚的靴子或鞋子，他们也出脚下究竟踩的是未经践踏的草地还是坚硬的沙砾小道。