Mountaineering is the activity of climbing the steep sides of mountains as a hobby or sport.
英汉词典释义
n.
登山,爬山;登山运动
Are you aware of the hazards of mountaineering?你知道登山运动的危险吗?He told us stories of how he had battled the elements on his mountaineering trips.他给我们讲述他登山时是怎样顶住坏天气的。