When molybdenum is deficient, nitrate may accumulate to a toxic level in the plant.

当钼不足时，硝酸盐会积累在植物中达到毒害的程度。

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The first step to controlling your anger, rather than having your anger control you, is to recognize your resentments and to express them before they reach a toxic level.

第一步是控制怨气，而不是让怨气控制你，弄清自己怨什么，并且把怨气达到毒害程度前释放出来。

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Many toxic effects can be studied at the cellular level.

许多毒性作用在细胞阶段就可加以研究。

《柯林斯英汉双解大词典》

Relaxation techniques such as meditation and deep breathing can bring a toxic level of anxiety down, but harnessing it can ultimately be more effective.

WSJ: Anxiety Can Bring Out the Best

The ratings agency says a more severe recession will push the level of toxic assets in 2012 and 2013 higher relative to prior expectations and other banking systems in Europe.

FORBES: S&P Says Italian Banks Look More Vulnerable, Cuts Ratings On 15

Finalists: Patricia Callahan, Sam Roe and Michael Hawthorne of the Chicago Tribune for their exposure of manufacturers that imperil public health by continuing to use toxic fire retardants in household furniture and crib mattresses, triggering reform efforts at the state and national level, and Alexandra Zayas of the Tampa Bay Times, St.

WSJ: 2013 Pulitzer winners in journalism and arts