过去是一个陌生的国度；那里的人做事方式不同。

Never forget why you started, and you can accomplish your mission. We must always keep in mind the mission of "dedicating oil to the motherland".

The past is a shadow that follows us, always present, always influencing.

教室是更大社会的缩影，因此，它是关于意义、身份和权力的斗争场所。

【译文】将知识默记在心，学习时，不感到满足，教人时，不感到倦怠，这三方面我做到了哪些呢？

The world is full of signs and wonders that come, and go, and if you are lucky you might catch the tail of one as it flies past.