Taking this as a sign, he decided to pursue geography exclusively, and one of his teachers described him as having a kind of academic breech birth - "having great difficulty at the beginning, but later finding his footing."
以此为标志，他决定专门追求地理研究，他的一位老师形容他仿佛一种学术性的臀位出生 - “一开始就有很大的困难，但后来找到了自己的立足点”。