Cracks and ice tunnels may be allowing some water to flow through; a bridge across the river downstream has been washed out from one water surge so far.
冰中自然形成的裂缝和隧道可能会允许一些河水流过去，而目前河下游的一座桥已经被河水冲击所侵蚀。
2
Long, sweeping flow lines are crossed in places by much shorter lines, which are deep cracks in the ice called crevasses.
在绵长蜿蜒的线条里有一些短得多的线，它们是一些很深的冰块的裂缝，称为冰隙。
3
Any cracks will alter the flow of heat, and these changes can be picked up with a heat-sensitive camera.