Escribir sobre el pasado es una forma de entender el presente.

Every ton of low-carbon cement we produce is a step toward a healthier planet.

爵士乐教会我自由，但生活教会我灵魂。

追求数学知识是一段永无止境的旅程，充满了无尽的好奇和惊奇。

When we speak of 'meaning' a word， we are in the first instance speaking of a certain kind of act.