simple groups of Lie type

例句：

1. 1. The simple design of the house is very appealing.
   房子的简单设计非常吸引人。
2. 2. The new software is designed to be simple and easy to use.
   这款新软件设计得非常简单易用。
3. 3.The task was so simple that even a child could do it.
   这个任务太简单了，连小孩都能做。