虽然如此，自然界的某些物质确实对人类的生理机能产生巨大的作用。
Nonetheless, certain natural substances can have a powerful effect on human physiology.
居里夫人坚信自然界存在着能发出射线的物质。
Madam Curie insisted (that) there was something in nature that gave out radiation.
居里夫人坚信自然界存在着能发出射线的物质。
Madam Curie insisted that there was something in nature that gave off radiation.
物质生活条件乃是世界，是人至始至终在其中生存的感性自然界。
The material living condition is the perceptual world in which human beings exist throughout.
自然界最主要的引火物质是闪电。
物质运动在量上的守恒和在质上的转化是自然界的一条基本法则。
The conservation and transformation of movement are a basic law in nature.
生物质作为可以再生的能源广泛存在于自然界中。
Biomass is a renewable energy source existing in the nature.
生物质作为可以再生的能源广泛存在于自然界中。
Biomass is a renewable energy source existing in the nature.
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