武官名。秦置，主宿卫、车骑，即郎中令所辖三署的五官中郎将、左中郎将、右中郎将。汉 袭 秦 制，属光禄勋。唐 宋 设官，于中郎将之外，复置郎将。
四叉树操作二郎将编辑一个四叉树记录无效的父母吗？
Quadtree manipulation in Erlang - Will editing a quadtree record invalidate the parent?
郎教练将胜利都归功于她的队员们和她们积极的心态，但是不可否认的事郎教练自己也值得褒奖。
Lang credits her team and their attitude for their success so far, but it's undeniable that Lang herself also deserves some credit.
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