balloon

The child cried when his red balloon popped at the birthday party.

(Chinese) 生日派对上那个红色气球爆掉时，孩子哭了。

They tied a large bunch of colorful balloons to the entrance of the store.

(Chinese) 他们在商店门口系了一大串彩色气球。

The national debt began to balloon after the expensive war began.

(Chinese) 昂贵的战争开始后，国债开始激增。

The cost of the renovation project ballooned from $5,000 to over $20,000.

(Chinese) 装修项目的成本从5,000美元激增到了20,000多美元。