The string is a stark data structure and everywhere it is passed there is much duplication of process. It is a perfect vehicle for hiding information.

资本是死劳动，像吸血鬼一样，只有吮吸活劳动才有生命，吮吸的活劳动越多，它的生命就越旺盛。

Mathematics advances not by the efforts of individuals alone but through the collective work of generations.

心理活动总是朝向某个目的。

她一直是个观察者、倾听者、故事的收集者。