There are twenty ways for three balls to be on each side.

每边有 20 种方法可以放置三个球。

Usually three balls of snow: one large one, one medium one and one small one.

通常是三个雪球：一大球、中球和小球。

Three balls of light flew back into the air from his pocket, revealing Dobby the house-elf, who had just Apparated into their midst.

三个光球从他的口袋里重新回到了地窖。家养小妖精多比突然出现在他俩的中间。

" Three Chasers, one Keeper, " said Harry, who was determined to remember it all. " And they play with the Quaffle. Okay, got that. So what are they for? " He pointed at the three balls left inside the box.

“三个追球手，一个守门员。”哈利说，决心把这些都记在心里。“他们打的是鬼飞球。行，明白了。那么这些是做什么用的? ”他指着留在箱子里的另外三个球问。