Englishfor English speakers
sustained
—
adjective
maintained at length without interruption or weakening
sustained flight
—
adjective
(= free burning)
(of an electric arc) continuous
heat transfer to the anode in free burning arcs
wave
Noun
—
A wave is the motion of water up and down.
wave
Verb
—
To move from side to side again and again.
The flag waved in the wind.