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There are other reasons --There are other reasons why it's perhaps harder now to feel calm than ever before. One of these, and it's paradoxical, because it's linked to something that's rather nice, is the hope we all have for our careers. Never before have expectations been so high about what human beings can achieve with their life span.

天然氣將作為過渡燃料發(fā)揮關鍵作用，但我們的目光必須始終聚焦在凈零排放的最終目標上。

生存的唯一方式就是要有幽默感。

教師不應該像往空容器里倒知識那樣教學，而應該像點燃火焰那樣教學。

即使世界給我?guī)硗纯啵乙惨愿杪暬貞?/div>