This is an empirical fact, not a speculation.

这个是已经发生了的事实，不是推测。

youdao

The process of scientific discovery is to use some scientific concept to give the empirical fact meaning and make it become the scientific fact.

科学发现的过程是以一定的概念框架为基础，赋予经验事实以存在意义，并将其上升为科学事实的过程。

youdao

We are able to talk about the fact that two plus one equals three, but it's not as though we ever come across Numbers — number three itself — anywhere in the empirical world.

我们可与去探讨，二加一等于三的这个事实，但是我们不可能有一天真的碰到数字，在现实世界中碰到个叫“数字三”的东西。

youdao

Well, you might think it's an empirical question, and in fact I am inclined to think it's an empirical question, varying from person to person.

你可能觉得这是个实证问题，我也倾向于认为它是实证问题，各人的情况各不相同。

耶鲁公开课 - 死亡课程节选

We all do believe something makes it true that two plus one equals three, but it's not the fact that empirical objects-- We don't do empirical experiments to see whether two plus one equals three.

我们都相信有些东西,使2加1等于3是正确的,但这不是说现实的东西,我们不会在现实中做实验,去看看二加一是不是等于三

耶鲁公开课 - 死亡课程节选

We know, as an empirical fact, that the major expansions of the postwar era have followed reductions in income tax rates.

FORBES: A Hayseed Economist Responds To The Times' Bill Keller

But even if you accept Mr. Geithner's case that the well-to-do must pay more for their presumed "privilege" of being governed, his story ignores the empirical fact that they already do pay a record share of income taxes, even relative to their share of income.

WSJ: Lawrence Lindsey: Geithner and the 'Privilege' of Being American

In fact there is little empirical evidence that investors cause more than fleeting distortions to commodity prices.

ECONOMIST: The charge-sheet against commodity speculators is flimsy