Usage note
气球是用橡胶或塑料做的,里面充满空气,可以飞起来,孩子们喜欢玩。
Qì qiú shì yòng xiàngjiāo huò sùliào zuò de, lǐmiàn chōngmǎn kōngqì, kěyǐ fēi qǐlái, háizi men xǐhuān wán.
A balloon is made of rubber or plastic, filled with air, can fly, and children like to play with it.