估算概率就是定量方法的一个例子。
Estimating with probabilities is one example of the quantitative approach.
据估算,地球范围150英尺之内有500 000颗小行星,撞击地球的概率约为300年一次。
There are an estimated half a million asteroids in the 150-foot range, which strike Earth roughly once every 300 years.
通过预测,一,可以估算概率的一个具体结果,在一个特定的情况。
Through prediction, one can estimate the probability of a specific outcome in a given situation.
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
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