ground speed

speed of an aircraft relative to the ground （飞行器的）地速. Cf 参看 air speed (air1)

grooved, groovy, grope, gropingly, gross, gross national product, grossly, grossness, grotesque, grotesquely, grotesqueness, grotto, grotty, grouch, grouchy, ground, ground control, ground crew, ground floor, ground rule, ground staff, ground swell, ground-bait, ground-nut, ground-plan, ground-rent, grounded, grounding, groundless, groundlessly, grounds, groundsel, groundsheet, groundsman, groundwork, group, group captain, group practice, group therapy, groupie,