经济活动的最终目标是创造财富，为人类社会的生存提供物质保障。
The ultimate goal of economic activity is to create wealth, and to guarantee subsistence of human society.
斯瓦米博士相信，当人们饥饿的时候，他们会寻找那些能为自己提供物质保障的伴侣。如果一个对象体态丰腴，正说明他（她）是很会寻找食物的。
Dr Swami believes that when hungry, people are looking for partners who can supply them with sustenance, and a larger person suggests they have been successful at finding food.
富含有机质的烃源岩为油气的生成提供了物质保障；
Material security has been offered from hydrocarbon source rock of containing organic matter for the generation of oil and gas.
富含有机质的烃源岩为油气的生成提供了物质保障；
Material security has been offered from hydrocarbon source rock of containing organic matter for the generation of oil and gas.
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