许多年来，我经常思考：如何净化人类的心灵。
For many years, I always think about: how to purify the human soul.
近年来的研究、药物载体，也经常用荧光材料。
In recent years, the research on drug carrier, also often use fluorescent material.
近年来的研究、药物载体，也经常用荧光材料。
In recent years, the research on drug carrier, also often use fluorescent material.
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