This settlement - which could be available by 2030 - would be built using natural resources from the lunar surface to create a permanent base for the purpose of science, business, and even tourism.
这个开拓地——有可能在2030年前可供使用——将利用来自月球表面的自然资源进行建设，为科学、商业甚至是旅游业提供永久性的基地。
David Hume strongly challenges causality as a base for Empirical Natural Science, which deeply influences Western Knowledge Theory as well as Contemporary Science Philosophy.
休谟对作为经验自然科学基础的因果律提出了最强有力的诘难，这一诘难深刻地影响了西方知识论和当代科学哲学。
Math is base of natural science.
数学是自然科学的基础学科。
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