And you must be careful of falling stones.

你们还必须当心下落的石头。

It seemed to me that the falling stones were meeting with an earlier resistance, and that the concussion gave a more abrupt and deadened sound.

在我看来， 落下的石头遇到了先前的阻力，并且震荡发出了更加突然和沉闷的声音。

But he threw it over all three of them; large though they were he doubted anyone would see their disembodied feet through the dust that clogged the air, the falling stone, the shimmer of spells.

但是他把隐形衣罩在了他们三个身上，尽管他们太大了，但他怀疑没人能通过遍布灰尘的空气、掉下来的石头和咒语发出的微光看到他们那没有身体的脚。

The only sounds were the gurgling of small rills down in the veins and crevasses of the glacier, and now and then the rattling report of falling stones, with the echoes they shot out into the crisp air.

唯一的声音是冰川的脉络和裂缝中小溪流的潺潺声，不时传来石块掉落的嘎嘎声，以及它们在清新的空气中发出的回声。