In adults, excessive use of some pain-killing drugs may cause severe kidney damage.

成年人过度使用一些止痛药可能会导致严重的肾脏损伤。

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Furthermore, scientists' inability to reproduce healthy neurons has prevented the use of neurons in experimental treatments of severe neurological disorders.

此外，科学家无法再生健康的神经元，所以在严重神经紊乱的实验治疗中无法使用神经元。

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The improper use of medicine could lead to severe adverse reactions.

用药不当会引起严重的不良反应。

《柯林斯英汉双解大词典》

While this is only a first step, it demonstrates how people with severe physical disabilities could use personal robots to gain independence.

FORBES: Robots as Surrogates for the Disabled

The most severe reactions require the use of an injection of epinephrine to subside, which is why many people with food allergies carry auto-injectors for emergencies.

CNN: Oral allergy syndrome may explain mysterious reactions

The draft law places severe restrictions on the use of frozen embryos -- created as part of a fertility programme but no longer needed or claimed by the parents -- for the purposes of medical research.

CNN: France forbids human cloning