请问mixing

问题描述:

请问mixing
完整句在这里,The survey was limited to 20 pre-selected locations,mixing cities,countries and other locales,and interviewees couldn't add their own.是一级城市的意思吗?

mixing cities 不是一个词组,mixing cities,countries and other locales,是说“把城市,国家和其他地方混合起来”的意思.