With the open response style of the questions, it took us 10 to 15 minutes to complete each interview. Thus at four hours per evening each interviewer could only get through 15 to 20 interviews per session. Nonetheless we felt we had really gained something.
同時開放式問答，一份問卷總要耗上十來分鐘，一個晚上四個鐘頭下來，雖然成果只有薄薄的十幾二十份，心裡倒是頗踏實的。