最低有效字符

例句：

1. 1.The minimum characteristic of a good software is its efficiency.
   一个优秀软件的最小特征是它的效率。
2. 2. The minimum characteristic of the new model is its sleek design.
   新型号的最小特征是其流线型设计。
3. 3.The minimum characteristic of a good software is its efficiency.
   一个优秀软件的最小特征是它的效率。