在猪流感调查阶段，数据是极缺乏的。
At this stage of the swine flu investigation, such data are sorely lacking.
现场调查阶段是涉及当场的、面对面的访谈，以及问卷管理的工作。
The On-Site Survey phase is an effort involving live, face-to-face interviews; together with the administration of a questionnaire.
在案件的调查阶段中，应法庭要求，少部分被拘留人员可能被剥夺这一权利。
During the active investigation phase of their cases, a small number of detainees, on a court order, may be deprived of the right to have visitors.
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