对于许多药物，器官功能在生理上和病理上的差异是决定它们处置速率的主要因素。
For many drugs, physiological and pathological variations in organ function are major determinants of their rate of disposition.
对于穷国中的许多儿童来说，增进安全的儿童特定药物的可得性和可及性仍然是可望而不可及的事情。
Improved availability and access to safe child-specific medicines is still far from reality for many children in poor countries.
对于其中许多疾患，药物治疗是有效的。
对于许多患有注意缺陷多动症的儿童来说，这类药物的确可以使他们的神经回路更加正常地工作。
In many children with A. D. H. D., these drugs can help the circuits function more normally.
对于许多患有注意缺陷多动症的儿童来说，这类药物的确可以使他们的神经回路更加正常地工作。
In many children with A.D.H.D., these drugs can help the circuits function more normally.
然而，许多人对于该药物无助于患者生命延长或出院而感失望。
However, many were disappointed that the drug also did not help people live longer or stay out of the hospital.
药物雇用的做法，被称为RNA干涉，一个原则，这是正在研究开发的药物对于许多疾病，包括癌症。
The drug employs an approach known as RNA interference, a principle that is being studied to develop drugs for many diseases, including cancer.
药物雇用的做法，被称为RNA干涉，一个原则，这是正在研究开发的药物对于许多疾病，包括癌症。
The drug employs an approach known as RNA interference, a principle that is being studied to develop drugs for many diseases, including cancer.
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