The survey asked respondents with meeting facilities to estimate how much revenue their airport earned from its meeting facilities during the last financial year.
调查要求拥有会议设施的受访者估计，他们的机场在上一财政年度从会议设施中获得了多少收入。
2
From this survey, one can estimate that fewer than one in five children have some contact with a hospital teacher—and that contact may be as little as two hours a day.
从这个调查中，我们可以估计不到五分之一的孩子和医院的老师有过接触——这种接触可能每天只有两个小时。
3
The survey also asked airports with meeting facilities to estimate what proportion of users are from the local area.