I think understanding is very important for us. One day, when I was playing on the playground, suddenly a tall boy knocked me down. He hurried to get his basketball back.
我认为理解对我们很重要。有一天，我正在操场玩，突然一个大个子男孩把我撞到，他是急着去取回篮球。

Though I felt painful, I didn't say anything bad to him. He said sorry again and again to me, and helped me up. From then on, we got to know each other, and became good friends.
尽管我觉得很疼痛，我并没有向他说什么不好听的话。他一次次地向我道歉，并帮我站起来。从那以后我们逐渐互相了解，成了好朋友。

Understanding is a bridge between each other. With understanding, the world will become warmer and warmer.
理解是人与人之间的桥梁。有了理解，这个世界会变得越来越温暖。

词义解析：

1.understanding：理解
2.important：重要的
3.suddenly：突然地
4.knock：敲
5.hurry：匆忙
6.though：尽管
7.painful：痛苦的
8.bridge：桥梁