英汉词典

1. 海拔
    If something is at a particular altitude, it is at that height above sea level.

    e.g. The aircraft had reached its cruising altitude of about 39,000 feet...
           飞机已到达约3.9万英尺的巡航高度。
    e.g. The following day I ran my first race at high altitude.
           第二天我第一次在高海拔地区参加了赛跑。