So all communication systems, language included, have certain features in common.
所有的通信系统，包括语言，都有一些共同的特征。
2
How would I, unable to speak the language, totally unfamiliar with local geography or transportation systems, set up interviews and do research?
我不会说当地的语言，完全不熟悉当地的地理环境或交通系统，我该如何安排采访和做研究呢？
3
Most number systems, then, are the by-product of two key factors: the human capacity for language and our inclination for focusing on our hands and fingers.