Aerostat

[єәrәustæt]

解释:

(n.) A balloon.

(n.) A balloonist; an aeronaut.

校对:梅勒妮

解释:

n. a machine formed to sustain weights in the air: a flying machine—sometimes applied in the newspapers to the aeronaut himself.—adj. Aerostat′ic—n. Aerostā′tion the art of raising and guiding balloons.

整理:米莉