The theory that everything in the universe is composed of, or can be explained by or reduced to, one fundamentalsubstance, energy, or force.
该理论认为，宇宙万物组成的，或者可以解释或减少，其中一个根本的物质，能量，或武力。
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Water is the fundamentalsubstance for all lives on the earth as well as for the life and production of human beings. It is also a valuable natural resource.
水是地球上一切生命赖以生存、人类生活和生产必不可少的基本物质，它是宝贵的自然资源。
3
The theory that holds that the nature of the world is dependent on matter, or that matter is the only fundamentalsubstance; thus, spirit and mind either do not exist or are manifestations of matter.