The procedure takes just seven minutes. The patient passes a wand over his chest, collecting data on heart pressure.

VOA: standard.2010.06.04

So, they started to do collecting of data on mortality and they developed something called actuarial science, which is estimating the probability of people living.

他们开始收集死亡率的数据,并且发展出精算学,用来估算人在各年龄段死亡的概率

耶鲁公开课 - 金融市场课程节选

She says this study has helped by collecting the data, and now the need is clear to work to better protect children.

VOA: standard.2010.06.29

He is also promising to ensure that procedures laid down for collecting the U.N.panel's data are followed more strictly in the preparation of future reports.

VOA: standard.2010.01.23