大学英语六级常用短语 mass observation
大学英语六级常用短语 mass observation
释义：
mass observation 民意调查
例句：
The files were commissioned by Mass Observation, a private social-research project that has studied the British since the 1930s.
大学英语六级常用短语 mass observation
释义：
mass observation 民意调查
例句：
The files were commissioned by Mass Observation, a private social-research project that has studied the British since the 1930s.
