请问,study在句中的含义
And 55% of the respondents in the May study,paid for by e-carder maker Sony Corp.,thought they'd use the device to read even more books in the future.
如题
不太理解,为什么 55% of the repondents in the May study,study 是动词的主动形式吧?说55%的回应者在5月回应吗?