Among thousands of people, you meet those you've met. Through thousands of years, across the boundless wilderness of time, you happen to meet them, neither earlier nor a bit too late. There is nothing to be said except to ask lightly, "Oh, you're here too?"

解释：上等的医生能够医治国家，次一等的只会医治病人，这本来就是医生的职守。

可持续性不仅仅是一个流行词，更是我们的责任。