The experts also say doctors need to work with pregnant women to do a better job of estimating exactly when a pregnancy began.

VOA: special.2009.10.26

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

Okay, so you could see difficulties in estimating on both sides of the norm. Yes?

所以你们可以看到在一定范围内,做估算有多困难

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Experts sometimes have difficulty estimating where,when or how much snow will fall.

VOA: special.2010.01.05

You must be pretty good at estimating calories if that--you ask that.

你这样问了,说明你很擅长估计卡路里

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Now if you're not in a kitchen it's going to be hard to measure a cup, or an ounce, or things like that so you'll have to be estimating.

如果你不在厨房,很难用杯,盎司,或其他单位来度量,因此需要自己来估计

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

What about estimating the amount? Go ahead.

你们觉得评估总量怎么样,你说

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选