Recent decades, the issues concerning natural radiation exposure, NORM in short, have been paid close attention to.
近年来，对天然照射的控制问题越来越受到社会各方面的关注。
2
Not only the research method of norm analysis can be used, the other research method of human social science and natural science can also be used too.
既可以使用规范分析的研究方法，也可以采用其他人文社会科学甚至自然科学的研究方法。
3
The thinking norm based on the natural science has an attempt to make the research into pedagogy scientific only with the positive method, which is the product of scientism.