单词	aircraft observer
释义	aircraft observer noun : a person holding a rating in the U.S. Air Force for any aircrew position except that of pilot Word History First Known Use 1950, in the meaning defined above
随便看	gyrofrequency gyrogonite Gyrogonites gyroidal gyroidally gyrolite gyrolith gyroma gyromagnetic gyromagnetic ratio gyromancy gyromitrae gyromitras gyron gyronny gyrons Gyrophora gyrophoraceous gyropilot gyropilots gyroplane gyroplanes gyros gyroscope gyroscopes

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