Professor Sam Huang, the China tourism specialist, attributes this to the geographic and cultural proximity between Southeast Asian countries and China.

中国旅游专家、澳大利亚埃迪斯科文大学旅游与服务营销研究型教授黄松山认为，这归功于东南亚国家与中国在地理和文化上的接近。

I started off by using geographic proximity, but that failed.

我一开始利用地理邻近性，但失败了。