《宋书·志·卷二十一》
开炮发石的声音好像雷鸣，兵众吐出气来可以成雨，在旌旗指挥下，进退都合乎规矩。
旄旍指麾，进退应矩。百马齐辔，御由造父。
The sound of the cannon firing stone seemed like thunder, and the soldiers spit out air so that it could rain. Under the command of the flag, their advances and retreats conformed to regulations.
<s>[INST] 请提供这段文言文的现代汉语解释: 旄旍指麾，进退应矩。百马齐辔，御由造父。 [/INST] 开炮发石的声音好像雷鸣，兵众吐出气来可以成雨，在旌旗指挥下，进退都合乎规矩。</s>
请提供这段文言文的现代汉语解释: 旄旍指麾，进退应矩。百马齐辔，御由造父。
user
开炮发石的声音好像雷鸣，兵众吐出气来可以成雨，在旌旗指挥下，进退都合乎规矩。
assistant