Translation of "Timeless" in Chinese

I am honored to be in the timeless city of Cairo, and to be hosted by two remarkable institutions. For over a thousand years, Al-Azhar has stood as a beacon of Islamic learning, and for over a century, Cairo University has been a source of Egypt's advancement.

我很榮幸能來到開羅這座不朽的城市，並受到兩所著名學府的招待。千載以來，艾資哈爾大學一直擔任著伊斯蘭教育的指路明燈；百年以來，開羅大學亦一直是埃及全國的發展泉源。

This is our chance to answer that call. This is our moment. This is our time, to put our people back to work and open doors of opportunity for our kids; to restore prosperity and promote the cause of peace; to reclaim the American dream and reaffirm that fundamental truth, that out of many, we are one; that while we breathe, we hope. And where we are met with cynicism and doubt and those who tell us that we can't, we will respond with that timeless creed that sums up the spirit of a people.

现在是我们回答这个问题的机会。这是我们的时刻这是我们的时代--让我们的人民重新就业，为我们的后代敞开机会之门，恢复繁荣，推进和平，重新确立“美国梦”，再次证明这样一个基本的真理：我们是一家人；只要一息尚存，我们就有希望；当我们遇到嘲讽和怀疑，当有人说我们办不到的时候，我们要以这个永恒的信条来回应他们。是的，我们能做到