All that noted, things were certainly brighter in the Islamic world, or Dar al Islam.

综上所述，伊斯兰世界或 Dar al Islam 的情况肯定更加光明。

And under the Abbasids, the Dar al Islam took on a distinctly Persian cast that it never really lost.

在阿拔斯王朝统治下，Dar al Islam 呈现出一种从未真正消失过的明显波斯风格。