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英语翻译这是一篇英语论文中的,希望能人帮下忙!急用.需要翻译的英文为:Compound 9 was rare in th

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英语翻译
这是一篇英语论文中的,希望能人帮下忙!急用.
需要翻译的英文为:Compound 9 was rare in the nature,it was reported in the Rosaceae sanguisorba,scammony dodder and saururaceae heartleaf,and was a characteristic chemical
constituent of dodder.It was the first time found in the Potentilla,which was a strong evidence to prove the genetic
relationship of plant chemotaxonomy among Rosaceae itself
with Rosaceae and scammony.
化合物9在自然界很稀少,据报到,在蔷薇科地榆、旋花科地莬丝子以及三白草科的心叶岩白菜中存在,是一种特有的莬丝子化学要素.第一次是在委陵菜里面被发现的,这有力地证明了蔷薇科本身及蔷薇科与旋花科在植物化学分类学上的遗传关系.