She had been his secretary for over a year, and had learned a great deal about the subject on which he was an international authority--glaciers. 她给安德鲁博士,一位冰川学的国际权威人士,当了一年多的秘书,学会了许多这个领域里的知识。
The evolution of internal law and internal authority may well be decisive in deterring whether this global society is going to survive in reasonable conditions. 国际法和国际权威的演变或许决定着这个全球社会能否在理性状态下生存。