play的过去式 played；
playv.玩耍；游戏；玩乐；(为玩耍)假装；
play的过去分词 played
These units played a key functional role in the military operation.
这些单位在军事行动中起到了主要的职能作用。
It is one of the greatest roles she has played.
这是她所扮演过的最重要的角色之一。
I\'ve never played right back before.
我过去从来未当过右后卫。
