效率专家

例句：

1. 1. The new software has greatly improved the company's efficiency.
   新软件大大提高了公司的工作效率。
2. 2. The teacher's explanation was clear and efficient, making it easy for students to understand.
   老师的讲解清晰高效，使学生易于理解。
3. 3. The engineer used a new method to increase the machine's efficiency.
   工程师采用了一种新的方法来提高机器的工作效率。