A pass between two mountain peaks or a gap in a ridge. 山口,隘口兩個山峰間的通路或者山脊上的裂口
Many mountaineers have reached that mountain peak. 許多登山家都登上過那座大山的頂峰。
The pilot in an airplane equipped with radar, flying at night, can see on the radar viewing screen distant buildings, or perhaps a dangerous mountain peak that is miles ahead. 裝備有雷達的飛機,在夜間飛行時飛行員能夠在雷達屏幕上看見遠處的建筑物、或許還能看見前面幾英里遠的險峻山峰。