英语翻译When in the course of human events,it becomes necessary

原文应该是这样的：
When,in the course of human events,it becomes necessary for one people to dissolve the political bands which have connected them with another,and to assume among the powers of the earth,the separate and equal station to which the Laws of Nature and of Nature's God entitle them,a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.
一个民族在人类的发展中,必须从曾经将自己与其他民族相联系的政治纽带中解放出来,必须获得大自然和上帝所赋予的独立、平等的地位,必须获得对“民族应当要求宣布足以推动自身走向独立的理由”这种观念的应有尊重,