balloon flight

• 气球飞行

balloon flight的用法和样例：

例句

1. Ten mathematicians are flying on a balloon over the Pacific ocean.
   十个数学家乘气球飞行在太平洋上空。
2. Effect of High Altitude Balloon Flight on Seed Yield and Fatty Acid Composition in Seed Oil of Celosia cristata L.
   高空气球飞行对鸡冠花籽粒产量及籽油脂肪酸组分的影响。