名词 natural law:

1. a rule or body of rules of conduct inherent in human nature and essential to or binding upon human society

natural gas天然气naturaladj.自然的；天然的；私生的natural gas storage天然煤气的储藏,天然气储存natural gas odorant天然气增味剂Natural Nourishment自然陶养natural interaction自然交互natural circulation自然循环Natural amino acids天然氨基酸natural integration服天顺地natural gas hydrate天然气水合物natural correlation自相关natural attenuation固有衰减