风吹草低见牛羊的大草原。黑黝黝的小山包。长长的驼队。一位青年兴奋的脸。天似穹庐,笼盖四野。这是1927年白云鄂博迷人的夏日黄昏。而那个青年人正是我国著名科学家丁道衡。他是随中瑞两国科学家组成的西北科学考察团来到这儿的。那座黑黝黝的小山没能吸引住瑞典地理学家斯文凯丁的目光,却让年轻的丁道衡激动得透不过气来。他冒着风险独自离队驮回的两箱矿石,不久即震惊了世界—— Wind and low see the prairie cattle and sheep. Swarthy hill package. Long camel team. A young excited face. Days like Qionglu, cover four wild. This is the charming summer evening of 1927 in Baiyunebo. And that young man is China’s famous scientist Ding Daheng. He is here with the delegation of Northwest Sci- ence, which is composed of scientists from China and Switzerland. The swarthy hill failed to draw the attention of the Swedish geographer Sven Kaidin, leaving the young Ding Daheng breathtaking. He risked his two packs of ores to leave alone and soon shocked the world -