A person throws the ball and another person hits the ball with his wooden bat. 一个人扔球，另一个人用木球棒击球。

　　The ball rolles across the ground and the batter starts to run. 球滚过地面，击球手就开始跑。

　　What is the game? It is baseball. 这是什么运动？这就是棒球运动。

　　Baseball is one of the most popular sports in north America and northeast Asia. 棒球是北美和亚洲东北部最受欢迎的运动之一。

　　A baseball game requires two teams. Each team has nine players. 棒球运动需要有两队。每队有九个队员。

　　Who invented baseball? 谁发明的棒球？

　　In the United States, Alexander Joy Cartwright invented the modern baseball game in 1842. 1842年，美国的卡特赖德发明了现代棒球运动。

　　He made baseball rules, and he organized the first group of baseball teams. 他制定了棒球规则并组建了第一支棒球队。