altitude
英 ['æltɪtjuːd]
美['æltɪtud]
	    - n. 高地;高度;[数] 顶垂线;(等级和地位等的)高级
 
英英释意
- 1. elevation especially above sea level or above the earth's surface;
 - "the altitude gave her a headache"
 
- 2. the perpendicular distance from the base of a geometric figure to opposite vertex (or side if parallel)
 
- 3. angular distance above the horizon (especially of a celestial object)