practical effectiveness的用法和样例：
例句
- How to enhance the actual effect of moral education in universities under the new situation is a practical problem facing moral education in universities.
摘要如何增强新形势下高校德育工作的实效性，是高校德育工作面临的一个现实问题。 - But, he added, there are practical concerns with large pragmatic trials because companies have to look at a wide range of possible effects when they test a drug.
但是，他承认对于大型实效性研究存在实际的考虑，因为进行实效性研究，制药公司必须在更大范围内评价药物的可能效果。
