Mountaineering is the activity of climbing the steep sides of mountains as a hobby or sport.
英漢詞典釋義
n.
登山,爬山;登山運動
Are you aware of the hazards of mountaineering?你知道登山運動的危險嗎?He told us stories of how he had battled the elements on his mountaineering trips.他給我們講述他登山時是怎樣頂住壞天氣的。