balloon复数形式
balloons
v.(突然)膨胀，涨大;乘热气球飞行
balloon的第三人称单数和复数
Those who failed to mark their names on the balloons were ruled out of the game.
那些没有在气球上标记自己名字的人被排除在比赛之外。
And then we began popping the balloons.
然后我们开始打爆气球。
\"Come on guys,\" he said, \"No, no!\" I began popping the balloons.
\"来吧，伙计们，\"他说，\"不，不！\"我开始扎气球。
