There are already a lot of data on the subject collected by, for instance, America’s General Social Survey, Eurobarometer and Gallup.
关于幸福这一话题已经有许多数据，例如，美国一般社会调查，欧盟民意调查以及盖洛普都收集过。
There are already a lot of data on the subject collected by, for instance, America’s General Social Survey, Euro barometer and Gallup.
像美国的总体社会调查，欧洲民意调查和盖洛普已经收集了许多这个主题相关的数据。
There are already a lot of data on the subject collected by, for instance, America's General Social Survey, Eurobarometer and Gallup.
关于幸福这一话题已经有许多数据，例如，美国一般社会调查，欧盟民意调查以及盖洛普都收集过。
I propose to give only a general survey of the subject; I shall not go into details.
关于这一专题，我打算只讲一个概况；我不想详谈细节。
I propose to give only a general survey of the subject; I shall not go into details.
关于这一专题，我打算只讲一个概况；我不想详谈细节。
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