| 单词 | operating altitude |
| 释义 | > as lemmasoperating altitude operating altitude n. ΚΠ 1956 D. E. Charlwood No Moon Tonight 15 Where the planes were circling, climbing steadily to operating altitude. 1992 Pilot July 65/1 67,000 feet is well above the routine operating altitudes of most jets known to be operational in the USA. < as lemmas |
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