balloon cover

例句：

1. 1.The balloon cover was a great way to protect the flowers from the sun.
   这个气球覆盖物是保护花朵免受阳光伤害的好方法。
2. 2.The balloon cover made it easy for us to move around the garden without disturbing the plants.
   这个气球覆盖物让我们在花园里移动时不会打扰到植物。
3. 3.The balloon cover was used to shield the audience from the rain during the outdoor concert.
   这个气球覆盖物用于在户外音乐会期间遮挡观众免受雨水影响。