作为一名实证主义者，他坚持认为所有真理都应通过实验来验证。

As a ___positivist, he insists that all truths should be verified through experiments.

这位研究者的实证主义立场使他更倾向于依赖实验数据而非哲学推理。

The researcher's ___positivist stance led him to rely more on experimental data than philosophical reasoning.