在经过对植物体系进行酶相对数量的调整后，研究人员会在这些酵母中加入一种名为二甲基吗啡的混合化学物质，这样就会得到纯净的吗啡。
After tweaking the system to adjust the relative amounts of the enzymes, the researchers could feed their yeast a precursor chemical called thebaine, and get pure morphine in return.
木质素是植物体中仅次于纤维素的一种重要大分子有机物质，在植物体中含量为15% - 30%。
Lignin is a kind of important macromolecular organic material and only inferior to cellulose inside plant, with a content of 15%-30%.
说明高温可加速叶片衰老，并影响植物体其他内源物质的变化，且有可能进一步降低作物光合能力。
The high temperature stress accelerated the senescence of leaf and caused the changes of other inner source substances, and then could reduce photosynthesis capability of the crop.
在植物体细胞组织培养中，蔗糖一直作为标准碳源，然而其他糖类物质如：葡萄糖、麦芽糖和山梨醇对植物体细胞培养也产生了一定的影响。
In somatic culture, sucrose has been a standard carbon source, however other kinds of sugar such as glucose, maltose and sorbitol have a certain influence on in vitro tissue culture.
如果释放到一个区域的放射性物质的量低至对人体不构成损害，那么植物体和动物也不会受到影响。
Plants and animals will be protected if the amount of radioactivity released into an area is low enough to be safe for human beings.
如果释放到一个区域的放射性物质的量低至对人体不构成损害，那么植物体和动物也不会受到影响。
Plants and animals will be protected if the amount of radioactivity released into an area is low enough to be safe for human beings.
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