参与者每年填写生活方式问卷调查表。
几项实验的参与者均被要求在办公室里填写调查问卷。
Participants in several experiments had to fill in questionnaires while sitting in an office.
几项实验的参与者均被要求在办公室里填写调查问卷。
Participants in several experiments had to fill in questionnaires while sitting in an office.
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