There was a time when it was believed precious metals would turn black when in contact with certain poisons. Japan's royalty may have lost some of its food tasters to this myth.

有一段时间，人们相信当接触到有毒物质时，那些珍贵的金属是会变黑的，所以日本的皇室的试菜仆人很有可能因为这样子虚乌有的理论而丧生。

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These studies indicate that some drugs and poisons have a certain impact on the growth and development of necrophagous flies, and this impact has differences among species.

研究表明，某些药(毒)物对尸食性蝇类生长发育具有一定的影响，且这种影响存在种属差异。

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It's the controversial thesis of University of Massachusetts toxicologist and school of public health professor Edward Calabrese that small doses of certain poisons may have the paradoxical effect of lengthening life spans.

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