绿色低碳发展不是选择题，而是必答题。
Green and low-carbon development is not a multiple-choice question, but a must-answer question.
量子理论是一个绝佳的例子，展示了理论如何既奇特又真实。
In string theory, all particles are vibrations of a tiny supersymmetric string.
我们随身携带着我们的历史，在我们的骨头和血液里。
Strength comes from overcoming the things you thought you couldn't handle.
