They decorated the room with flowers and balloons.他们用花和气球装饰了房间。The first vehicles to navigate the air were balloons.首次在空中航行的飞行器是气球.Many children like balloons.许多孩子都喜欢气球....
Huge balloons bobbed about in the sky above...一个个巨大的气球在头顶的蓝天中漂浮着。They decorated the room with flowers and balloons.他们用花和气球装饰了房间。Helium is a gas used in balloons.氦是一种用于气球的气体.The first vehicles to navigate the air were bal...