研究总体表明，昆虫可以为食物或饲养系统做出有价值的经济和营养贡献。
Studies overall show that insects could make valuable economic and nutritional contributions to the food or feed systems.
菜花里面含有一些重要的营养物质，但哈根达斯的价值则更直接，因为它可以为你提供能量。
Cauliflower has some important nutrients, but Haagen-Dazs has immediate value because of the energy it gives you.
19世纪和20世纪初，人们确信历史遗迹可以为过去提供可靠证明，而在当时，科学被视为客观的和毫无价值的。
The conviction that historical relics provide infallible testimony about the past is rooted in the nineteenth and early twentieth centuries, when science was regarded as objective and value free.
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