Between 17, 500 and 25, 400 feet in elevation, the snow and soil samples they tested exceeded the U.S. Environmental Protection Agency's tolerance levels for both arsenic and cadmium.
他们测试了海拔17500到25400英尺之间的积雪和土壤的样本，发现这些样本的砷和镉都超过了美国环境保护局的标准。
The upper and lower extremes of environmental conditions which members of a species can survive are the species limits of tolerance.
种的成员能够生存的环境条件上限和下限是种的耐受限度。
Environmental toxins or genetic susceptibility may account for some cases. Drug therapy requires careful scheduling and combinations to delay development of tolerance and side effects.
环境毒素或是遗传敏感性可能也是病因。药物疗法必须谨慎规划并结合耐药性与副作用的延迟作用。
A pure synthetic tetrapeptide which was developed to decrease the nerve stimulation, increasing thereby skin tolerance to environmental factors or known irritating agents.
一个纯粹的合成四肽是发达国家，以减少神经刺激，从而增加皮肤耐受性环境因素或已知的刺激剂。
So, it is quite important to study the mechanisms of heavy metal damage and tolerance of plants for the environmental safety and health of human being.
因此，研究植物重金属伤害及其抗性机理，已经成为有关环境和人类健康的重要问题。
Further, the gene of the transcription factor is used to transform a plant, thereby improving tolerance against environmental stresses such as low temperature, dehydration, and salt stresses.
另外，将转录因子的基因用于转化植物，从而提高对环境胁迫如低温，脱水，和盐胁迫的耐受性。
Further, the gene of the transcription factor is used to transform a plant, thereby improving tolerance against environmental stresses such as low temperature, dehydration, and salt stresses.
另外，将转录因子的基因用于转化植物，从而提高对环境胁迫如低温，脱水，和盐胁迫的耐受性。
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