- unitraingondolaAbiaxialgondolacarforcoal.Afterafewsecondsthegondolaislaunchedupwards.ausuallyopengondolasuspendedfromahot-airballoon.Afterafewseconds,thegondola(ball)islaunchedupwards.Suchabagwithsufficientcapacitytoliftasuspendedgondolaorotherpayloa...
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