A large bag of prepared silk or other material, which, when filled with a lighter-than-air gas, such as hydrogen, ascends and floats in the air.

气球；氢气球。

A large, inflated ball.

充气的玩具气球。

The outline enclosing words spoken or thought by a figure, esp. in a cartoon.

浮白(漫画里人物对话外围的轮廓)。

To go up in a balloon.

藉气球上升。

To expand or swell out like a balloon.

膨胀或肿大得像气球。

To increase rapidly.

迅速增加。