In describing these developments, Gregor is a thoughtful and sure-footed guide, relying on solid archival research, marshalling his facts well and remaining cogent in his arguments.

• 在描述这些发展进程时，格里格是一位深思熟虑、脚步稳健的向导，他依据详实可靠的档案研究，其论据恰当，论点令人信服。