形容极其少有，珍贵。
be none on earth and few enough in the heavens <be seldom seen on earth or in heaven>
天(tiān)
上(shàng shǎng)
少(shǎo shào)
有(yǒu yòu)
()
地(dì de)
下(xià)
难(nán nàn nuó)
寻(xún)
