在讲台上用英语怎么说

But as I see now, our classroom is still the layout in the old world: one higher platform, one higher step under teacher's feet.
但我看到现在的教室还是旧世界的格局——高高的讲台，老师的脚底下还铺垫着高高的台阶。
"He would stand on those platforms and declare, 'Danny Shechtman is talking nonsense. There is no such thing as quasicrystals, only quasi-scientists.'" Shechtman said.
“他站在讲台上宣称，‘达尼埃尔·谢赫特曼是胡说八道，没有准晶体这回事，只有准科学家’”谢赫特曼说。