it was not so much the many blows she received as the lack of fighting spirit that led to her losing the game.能否解释一下句子成分?

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not so much... as ...与其... 不如...句型。it was not so much the many blows she received as the lack of fighting spirit that led to her losing the game.与其说是她受到的许多打击不如说是缺乏斗志导致了她在比赛中失败。