科学家曾相信：是不能形成化合物的。
That could not FORM chemical compounds was once believed by scientists.
䜨科学家曾相信：氙气是不能形成化合物的。
That xenon could not form chemical compounds was once believed by scientists.
科技家曾相信：氙气是无所不能形成化合物的。
That xenon have to not FORM chemical compounds were once believed by scientists.
并在表面形成化合物，减轻了材料表面铁元素的氧化；
Titanium ion implantation formed compounds and alleviated the oxidation of the ferric element in the surface layer.
当两种或两种以上的元素化合形成化合物时，发生化学变化。
When two or more elements combine and form a compound, a chemical change takes place.
在这些情况下氮不会是可用的对于同其他元素结合，为了形成化合物和形成生命的建筑模块的链条。
Under these conditions the nitrogen would not be available to bond with other elements in order to form the compounds and chains that form the building blocks of life.
在这些情况下氮不会是可用的对于同其他元素结合，为了形成化合物和形成生命的建筑模块的链条。
Under these conditions the nitrogen would not be available to bond with other elements in order to form the compounds and chains that form the building blocks of life.
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