At the time we were still hundreds of years behind Persian Empire and Roman Empire in such fields as medicine, astronomy and mathematics.
但那时候，在冶金、数学、天文等学科，我们被遥远的波斯帝国以及后来的罗马帝国落下了数百年的差距。
At the time we were still hundreds of years behind Persian Empire and Roman Empire in such fields as medicine, astronomy and mathematics.
但那时候，在冶金、数学、天文等学科，我们被遥远的波斯帝国以及后来的罗马帝国落下了数百年的差距。
应用推荐