气球英语说法为 "balloon"。这个词源自法语词"ballon"，意为"大球"，最早记载于17世纪。

例句：

The kids were having fun playing with the balloons. (孩子们在玩气球中很开心。)
We bought a bunch of balloons for the party. (我们买了很多气球来庆祝聚会。)
The hot air balloon soared above the city. (热气球在城市上空飞翔。)

注意：气球还有其它用途的英文说法，如气球机"hot air balloon"，气球升空"ballooning"等。