例句與造句

1. It had a hovering ceiling at and a range of 334 miles at 86 mph.
2. The coaxial rotor design provides a hovering ceiling of 4, 000 m and vertical rate of climb of 10 m a second at an altitude of 2, 500 m.
3. It's difficult to find hovering ceiling in a sentence. 用hovering ceiling造句挺難的