但美乐托宁对心血管系统疾病的确切作用机制及安全性和有效性，尚需要广泛的基础研究和大规模的临床验证。
The exact mechanisms of melatonin on cardiovascular disease, its safety and efficiency call for extensive basic studies and large scale clinical trials.
最能确切的形容这种美妙的共振，内外谐和的共鸣的词，便是美。
The word that seems to fit most exactly this feeling of resonance, this sympathetic vibration between inside and outside, is beauty.
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