caoyun system造句

例句与造句

1. During the Ming dynasty the usage pattern of the Caoyun system went through three successive phases.
2. The Chinese force consisted of a garrison of Manchu and Mongol Grand Canal and Yangtze River, the battle effectively blocked operation of the Caoyun system, a transport network vital for the movement of grain throughout the empire.
3. It's difficult to find caoyun system in a sentence. 用caoyun system造句挺难的