cannon

游乐园里的空气炮把泡沫球射向孩子们。

The amusement park's air ___cannon shoots foam balls at the kids.

那位足球运动员一记重炮轰门直挂球门死角。

The soccer player blasted a ___cannon of a shot into the top corner.

他在台球比赛中打出了一个完美的连击，先击中红球再碰到黑球。

He scored a perfect ___cannon in billiards by hitting the red ball first and then the black ball.