如果更多人捐赠器官后死亡，就没有必要使用活的捐助者。
If more people donated organs after their death, it would not be necessary to use live donors.
而且你身体的各个其他器官都是从同一个地方获取必要信息的。
And every other of your bodily organs gets its information in the same place.
器官组织的绝对活度定量是吸收剂量估算的必要步骤。
The quantification of absolute activity in vivo is necessary procedure of estimating the absorbed dose of organ or tissue.
为了开发这一新油料植物资源。对其营养器官解剖构造进行深入的研究是必要的。
The deepgoing study of the anatomical structure of the vegetative organ of this plant is very useful to the development of the new vegetative oil resources.
但是该节目没有告诉我们如果认真处理长期的器官缺乏问题，就没有必要做那么多生死抉择。
But it failed to tell us that we would not need to make so many life-and-death decisions if we got to grip with the chronic organ shortage.
除了胃肠道和免疫系统之外，还对心血管、肺和中枢神经系统等许多必要的器官和系统产生有效作用。
They have potent actions on many essential organs and systems, including the cardiovascular, pulmonary, and central nervous system as well as the gastrointestinal tract and the immune system.
光照是玫瑰进行光合作用的必要因素，而温度有助于我们推测器官的生长。
Whilst the knowledge of light is essential to predict photosynthetic performance of rose, that of temperature will enable us to predict extension growth of organs.
光照是玫瑰进行光合作用的必要因素，而温度有助于我们推测器官的生长。
Whilst the knowledge of light is essential to predict photosynthetic performance of rose, that of temperature will enable us to predict extension growth of organs.
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