效

例句：

1. 1. The medicine will have an effect on your health.
   这种药物将对你的健康产生影响。
2. 2. His plan has been effective in solving the problem.
   他的计划在解决这个问题上是有效的。
3. 3. The new technology will greatly enhance our work efficiency.
   新技术将大大提高我们的工作效率。