In science, progress is often achieved by questioning established dogmas and daring to propose new ideas.
在科学中，进步往往是通过质疑既定教条并敢于提出新想法来实现的。
Green and low-carbon development is not a multiple-choice question, but a must-answer question.
No hay que tener miedo a perderse, sino a no encontrarse nunca.
证明是一种用于使他人相信数学陈述为真的工具。