In many respects, the dearth of moral purposeframes not only the fact of such widespread phone hacking but the terms onwhich the trial took place.
主干:thedearth frames not only the fact …but the terms….
介词短语做后置定语:介词短语of moralpurpose,做thedearth的后置定语,修饰thedearth。
介词短语of such widespread phone hacking做the fact的后置定语,修饰the fact。
翻译:从许多方面来说,道德使命感的缺失导致了这样大面积的电话窃听,而且还导致了对审判的讨论。