anchor ice

Brandon Overstreet, a doctoral candidate in hydrology at the University of Wyoming, picked his way across the frozen landscape, clipped his climbing harness to an anchor in the ice and crept toward the edge of a river that rushed downstream toward an enormous sinkhole.

怀俄明大学（University of Wyoming）水文学博士研究生布兰登·奥弗斯特里特（Brandon Overstreet）在这片冰面上小心翼翼，将他的安全带系到冰层中的一个锚上，朝着一条向下流入巨大深坑的河流的边缘徐徐前进。

Without the thruster, the washing-machine-size Philae would have to rely on ice screws on its landing legs and the harpoons to anchor it to the comet.

如果没有那个推进器，洗衣机大小的菲莱就只能依靠着陆装置上的冰锥和鱼叉来抓牢彗星表面。