/ˈæltɪtju:d; US -tʌ:d ||; ˈæltəˌtud/noun1 [sing] the height of sth above sea level 海拔: The plane climbed to an altitude of 10000 metres. 那架飞机爬升到海拔10000米。
2 [C] [usu.pl] a place that is high above sea level 海拔甚高之处；高处；高地: You need to carry oxygen when you are climbing at high altitudes. 攀登高处时，需要带备氧气。