时不时有这样的孔穴给幽径透点亮光。

From time to time such holes light up the path.

冰上的孔穴生活在水中的哺乳动物，如海豚，前来换气的冰面上的孔。

A hole in ice to which aquatic mammals, such as dolphins, come to breathe.

痛苦的嚎叫声从本该是它脸部的位置上那深陷的黑色孔穴中传出来。

Howls of pain issue from a gaping black orifice where its face should be.

我想冒险一试，或许我们可以借助峭壁上凹入的孔穴保护，迅速通过这段糟糕的落物飞溅的地段。祈祷成功！

I want to risk it, to hurry from protected alcove to alcove, then make one mad dash through the worst of the falling projectiles-and pray.