1. What is the name of the world governing body of softball?

　　垒球的世界性管理机构的名称是什么？

　　2. The ISF is the world governing body of softball.

　　国际垒球联合会是垒球的世界性管理机构。

　　3. What does ISF stand for?

　　ISF表示什么？

　　4.ISF stands for International Softball Federation.

　　ISF是国际垒球联合会的缩写(简称)。

　　5. What are the differences between softball and baseball?

　　垒球与

　　6. The rules and terms of softball are similar to those of baseball.

　　垒球的规则和专门用语与棒球相似。

　　7. But in softball, the pitcher must throw the ball underhanded.

　　但垒球的投手必须使用下手投球。

　　8. The size of the ball and the size of the field are different too.

　　球和场地的大小也不同。

　　9. There are only seven innings in a game of softball.

　　垒球比赛只打7局。

　　10. But the basic skills are the same as those required for baseball.

　　但基本技术是与棒球相同的。