ballooning

相關句子：

1. Who was the first man to make an ascent in a balloon?
   第一個乘氣球升空的人是誰?
2. They like to go ballooning at weekends.
   他們周末喜歡乘氣球玩。

英文解釋：

名詞 ballooning:

1. flying in a balloon

動詞 balloon:

1. ride in a hot-air balloon
   同義詞：balloon
2. become inflated
   同義詞：balloon, inflate, billow

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