efficient protocal

例句：

1. 1. The new software is designed to be efficient and user-friendly.
   这款新软件旨在高效且用户友好。
2. 2.The engineer was efficient in his work, completing the project ahead of schedule.
   这位工程师工作效率高，提前完成了项目。
3. 3.The teacher's advice was efficient, providing clear guidance on how to improve our performance.
   老师的建议很有效，为我们提供了清晰的改进方法。