The balloon moves back down from space until it falls down in the sea.
气球从太空返回，直到落在海里。
2
Passengers, spacemen, capsule and balloon are then gotten back by ship.
然后乘客、宇航员、太空舱和气球通过船只返回。
3
He has spent two decades and nearly $20 million in a quest to fly to the upper reaches of the atmosphere with a helium balloon, just so he can jump back to earth again.