先天下之忧而忧，后天下之乐而乐拼音用法 先天下之忧而忧，后天下之乐而乐近义词/反义词 先天下之忧而忧，后天下之乐而乐的出处解释

成语名称：先天下之忧而忧，后天下之乐而乐：be the first to become concerned with the world\'s troubles and last to rejoice in its happiness英语：...

• 佚名 / 成语 / 2026-04-05