Unfortunately the human body is unable to obtain omega-3 fatty acids EPA and DHA directly through diet alone, making a fish oil supplement a much more reliable source.

可惜人类不能直接从日常的食物中获取奥米茄3脂肪酸、EPA和DHA，所以日常补充适当的高品质鱼油是非常可靠的资源。

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As a function of Italy's search for a reliable source of oil, AGIP, a division of ENI, is now a major global petroleum company.

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While the Balkans did net the Germans a reliable source of oil, attempting to squeeze an invasion of the Balkans and Operation Barbarossa into the same summer was a gigantic mistake.

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Moreover, building better machines is something that we have had ton of luck at over the past several hundred years and is a more reliable source of growth than finding new easy-to-get deposits of oil and gas or decreasing the long run volatility in energy prices.

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