While diamonds, rubies, emeralds, and other precious stones are often indistinguishably similar, no two opals look the same, thanks to a characteristic called " play of color."

当钻石、红宝石、绿宝石，及其他宝石都相似到难以区别，但蛋白石都一样，原因是一项叫做「变彩」特性。

We drew in deep breaths of it as we walked back from dinner through the cold vestibules, unutterably aware of our identity with this country for one strange hour before we melted indistinguishably into it again.

我们吃过晚饭穿过寒冷往回走时，一路深深地呼吸着这寒气，在奇异一个小时中难以言喻地意识到自己与这片乡土之间血肉相连关系，然后我们就要重新留痕迹地融化在其中了。