So you see those white fibrous roots underneath the mushroom -- those are mycelium.

你看到的蘑菇底下 那些白色纤维状的根就是菌丝。

The stones, adhering by no soil or fibrous roots of vegetation, rolled away from under our feet, and rushed down the precipice below with the swiftness of an avalanche.

这些石头没有附着土壤， 也没有植被的须根，从我们脚下滚滚而下， 以雪崩般的速度冲下悬崖。