blimp

例句：

1. 1.The balloon floated high above the treetops.
   那个气球飘浮在树梢之上。
2. 2.The blimp was used for weather forecasting.
   那个气球被用来做天气预报。
3. 3.The blimp was a symbol of peace and harmony.
   那个气球是和平与和谐的象征。