complete mastery;Absolute purity的用法和样例：
例句
- Never before had Rudolf played with such mastery.
鲁道夫从未演奏得这么炉火纯青。 - Learning to shape the runes of magic must be completely interwoven with the broader journey of personal development and transformation if one is to know true mastery.
要学习怎么塑造魔法的咒符，并达到炉火纯青的境界，就必须完全地融入自我发展与蜕变的更为广袤的旅程之中。
