他们找到事件的参加者，然后记下他们的口述证明。
They go to participants in those events and record their oral testimony.
但是，如果必须向第三者口述这封信，几乎在任何情况下，它都会生动大为减色，亲密程度陡减。
But when this same letter must be dictated to some third person, it will in almost every case be far less vivid, far less intimate.
访谈者在研读有关文献的基础上，设计了口述史访谈问题。
Based on relevant literature, the interviewer designs the questions of oral history for the interview.
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