汉译英试题训练

请将下面这段话翻译成英文：

外交史作为了解一连串特殊事件的一种方式，过去是（现在也是）最好的；而作为了解更广泛的国际关系或为了研究国际管理理论奠定理论基础的手段，外交史的利用价值在过去和现在均是有限的。

翻译及详解

参考翻译
As a means for understanding a particular series of events, diplomatic history was(and is) excellent; as a means for understanding a particular sweeps of international relations or for developing a theoretical basis for the study of international relations, diplomatic history was of limited utility.