advertising blimp
helium blimp
giant blimp
floating blimp
A: Look! A giant blimp is floating over the stadium!
A：看！一个巨大的飞艇正在体育场上方飘浮！
B: Yes, it's there for the opening ceremony.
B：是的，它是为开幕式准备的。
1) 飞艇
2) 充气飞行器
3) 广告气球
1. 飞艇
noun
1. a large, gas-filled aircraft that is steered
Synonym: airship, dirigible