If China wants to catch up with the developed countries, arduous efforts should be made by several temerarious or more.

中国要赶上发达国家，还需要几代人、几十代人的艰辛努力。

youdao

What a difference a year or two makes. The driving force behind both these temerarious claims is what I call the "social mood" of a population.

一两年的变化有何分别?这两个鲁莽的论断背后有着一个我称之为民族“社会情绪”的推动力。

youdao