based on good evidence

If a planned project is not based on good evidence, it should become research, so that all can be sure it is worth doing.

如果一个设计好的项目没有良好的证据基础，它将成为研究，所以要完全保证它值得做。

The experimental evidence suggests that a particularly good way of activating the cell-killing arm of the immune system is to use two vaccines based on different antigens.

实验之中的种种迹象表明一个能够充分发挥免疫系统的抗病毒能力的方法，那就是同时使用两种能够辨认不同种类抗原的疫苗，一为主，一为辅，一种负责刺激免疫系统,使其做好攻击艾滋病病毒的准备;

We need to have a good balance, to have evidence-based, based on the whole scientific knowledge that we have, not only one or another study.

我们需要找到一个好的平衡点，需要依赖循证医学证据，需要从我们已知的科学知识的整体出发，而不是仅仅根据单个研究来得出结论。