four-ball machine

例句：

1. 1. This four-ball machine is very popular among children.
   这台四球机在孩子们中非常受欢迎。
2. 2. The four-ball machine is a great way to exercise and have fun at the same time.
   这台四球机是锻炼和娱乐的好方法。
3. 3. The four-ball machine is easy to operate and has many features that make it fun for players of all ages.
   这台四球机操作简单，有许多功能使得它对各个年龄段的玩家都很有趣。