She and her team based their research on observation, interviews, surveys of users' homes and asking people to keep logbooks of their communications usage in several European countries.

她和她的小组通过观察、访问、调查用户的家人并要求他们保留在不同欧洲国家的通话记录。

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The few workers on duty keep an eye on progress from glassed-in observation posts above the shop floor, watching multiple computer screens.

ECONOMIST: Who says heavy industry has had its day?