i can fly but i can't fly as high as the plane.If there is no hot air i wil fall down the ground.根据英文解释猜测单词

问题描述:

i can fly but i can't fly as high as the plane.If there is no hot air i wil fall down the ground.
根据英文解释猜测单词

hot-air ballon
热气球

热气球
fire balloon

balloon气球,热气球