When thou art calling out on the Rostra, hast thou forgotten, man, what these things are?

当你在讲坛上呼唤时，人啊，你忘记了这些事物是什么吗？

Except that in Latin a ship's prow was called a rostrum and the plural of rostrum was rostra so they called the speaking platform rostra.

只是在拉丁语中，船首被称作“rostrum”，而且它的复数形式是“rostra”，所以他们将讲台叫做“rostra”。