As a field marshal from 1784, he introduced reforms in the army, built the harbor of Sevastopol, and constructed a fleet in the Black Sea.是什么意思_As a field marshal from 1784, he introduced reforms in the army, built the harbor of Sevastopol, and constructed a fleet in the Black Sea.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句