慢速英语:Words and Their Stories: Touch All Bases

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短语讲解：

1. But first, he had to run around the four bases.

run around 东奔西跑，奔忙
例句：If they're happy, they laugh and run around.
当他们感到快乐的时候，他们就会笑和到处跑。

2. other players on his team watched carefully to make sure he touched each one.

make sure 把事情弄清楚，核实或查明某事物
例句：Make sure she eats nutritious food.
要确定她吃得很营养。

3. Even professional diplomats use this expression, as well as others that come from baseball.

as well as 也，又
例句：Boys as well as girls are taught cookery in school these days. 
现在学校里男女学生都学烹饪。 

4. Perhaps they did this after expressing hope that they could play ball with each other, meaning that they could learn to cooperate.

each other 互相，彼此
例句：Work and play shaded into each other. 
工作和娱乐渐渐地融合起来。