As an beneficial and essential supplement to the normal experiment, virtual experiment not only saved a lot of education fee, but also extend the experiment on time and space effectively.

虚拟实验作为传统实验的一个必要的有益补充，既能节约大量的教育经费，也使实验在时间和空间上得到有效的延伸。

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The conventional representation of location information is hard to understand for human in location-aware computing, but the natural language is a beneficial supplement.

讨论位置感知计算中定位信息表达存在的不足，引入自然语言描述作为补充。

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But taking a supplement of any one of them will not have the same beneficial effect, he said.

CNN: Nutritional drink, imaging show promise for Alzheimer's

Since you are probably not going to be eating a steak or chicken breast at the gym, a protein drink or supplement may be beneficial immediately before, during or after workouts, but is not necessary.

CNN: How should I eat to build muscle mass?