While mineral deficiencies can limit the growth of plants, an overabundance of certain minerals can be toxic and can also limit growth.

虽然缺乏矿物质会限制植物的生长，但某些过量的矿物质会使植物中毒，同样会限制植物的生长。

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Contrary to industry statements, there are no regulatory standards that limit formaldehyde, 1, 4-dioxane or most other toxic chemicals in personal care products sold in the United States.

与业界宣称的相反，在美国，对销售的个人护理产品中甲醛、1,4 -二恶烷和其他大多数有毒化学物质的含量限制并没有监管标准。

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The toxic drugs such as Radix Aconiti Lateralis Preparata can reach the safe limit after being decoctered first 30 minutes.

毒性药物如附片则先煎30分钟即可达到安全限量；

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That could limit the toxic side effects of some treatments, while simultaneously being more effective at fighting disease.

FORBES: Scientists Target Cancer With DNA Robots

In December, we finalized the first-ever national standards to limit mercury and other toxic emissions from power plants, helping safeguard the health of millions.

WHITEHOUSE: Presidential Proclamation -- Earth Day