The truth has its own self. We can conduct research into the self theory;

真理有自己的本体，我们可以探讨真理的本体论问题；

NURSE EDUCATORS AND RESEARCHERS provide clinical and theoretical education to and promote professional development of nurses and midwives, and conduct research into nursing practice.

护理教育者和研究员提供临床和理论指导，促进护士和助产士的专业发展，进行护理实践研究。

China will conduct research into the technologies for low-cost launch vehicles, new upper stage and the reusable space transportation system between the earth and low-earth orbit.

开展低成本运载火箭、新型上面级、天地往返可重复使用运输系统等技术研究。