The overall result has been to make entrance to p

rofessional geological journals harder for amateur ,a result that has been reinforced by the widespread introduction of refereeing ,first by national journals in the nineteenth century and then by several local geologic journals in the twentieth century. 求翻译和句子成分划分！谢谢

这样一来总的结果便是业余爱好者想在专业地质学期刊发表文章就更难了，而被广泛使用的论文评审推荐制度又进一步强化了这一结果，该种制度先是出现在19世纪的国家级刊物上，后又在20世纪被几家地方级地质学刊物所使用。
The overall result是主语
has been to make 是谓语
entrance是宾语
to professional geological journals是定语
harder是宾补
for amateur 是状语 ,
a result 是同位语 后面是定语 从句
that是定从中的主语
has been reinforced是定从中的谓语
by the widespread introduction of refereeing 是定从中的状语,
first by national journals in the nineteenth century and then by several local geologic journals in the twentieth century是状语.

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