A ballpark figure is a phrase meaning a number which is an acceptably accurate approximation.

A ballpark figure一个短语，表示一个可接受的准确近似值。

Do we use the real numbers or do we approximate?

我们用实数还用近似值？

Anyway, the point is that Newton's law of gravitation is just an approximation - good enough to get us to the moon, but not perfect. General relativity is better.

不管怎样，重点牛顿的万有引力定律知识一个近似值—虽然足以让我们登上月球，但还不够完美。广义相对论更好。

The date March 14, as we write it in the United States, is 3-14.

而圆周率日正由近似值3.14得来。

Estimate, roughly calculate, give an approximation, a good guess.

估计，粗略计算，给出一个近似值，一个好的猜测。

It's an approximation, that's gonna be 0.15 meters.

这只个近似值，应该0. 15米。

This sounds good for a first approximation, since it is monotonically increasing if we win battles and manage our resources well, and decreases when we're losing.

作为一个第一近似值，这听起来很不错，因为当我们管理好资源和赢得的时候它就增加，而我们在丢失比赛优势的时候它就减小。

I'm gonna be making a lot of approximations in this calculation.

我在计算时会用到很多近似值。

And when they come through our radar we get an approximation for position and velocity.

当它们通过我们的雷达时，我们会得到位置和速度的近似值。

Estimate, roughly calculate, give  an approximation, a good guess.

估计，粗略计算，给出一个近似值，一个很好的猜测。

But the best we can really do is offer an approximation.

但我们真正能做的最好的事情就提供一个近似值。

This means it's approximately equal to, so it's an approximation, not exactly equal.

这意味着它大约等于， 所以它一个近似值， 而不完全等于。

Paul had seen enough for a first approximation.

保罗已经看到足够多的第一近似值。

As an approximation, however, we can identify this with the rate of interest.

然而，作为一个近似值， 我们可以用利率来确定这一点。

But the first thing you should know about dark matter is that it doesn't have a color, and at least at first approximation, light seems to go right through it, so we can't see it.

但关于暗物质，你首先应该知道的它没有颜色，至少在最初的近似值中，光似乎可以直接穿过它，所以我们看不到它。

We must generally, therefore, content ourselves with them, not as being always exactly in the same proportion as the current prices of labour, but as being the nearest approximation which can commonly be had to that proportion.

因此，我们通常必须对它们感到满意， 因为它们并不总与当前的劳动力价格完全成比例， 而作为通常可以与该比例最接近的近似值。

The hard part, the thing that no one had as yet succeeded in doing, was to predict for a time far enough ahead to be of any use a usably close approximation to the vortex's quantitative activity.

困难之处，也至今无人能成功解决的问题，在于提前足够长的时间， 预测出涡流定量活动的足够精确的近似值， 以便实际应用。

And people try and write approximations to these functionals and come up with descriptions of the electron clouds, where they're going to go, how they're going to interact when you put two elements together.

人们试图写出这些泛函的近似值， 并提出电子云的行为描述，包括它们将如何移动以及当两种元素结合时它们将如何相互作用。

You have to come up with some approximation to the much more complicated thing you're doing such that you have the ability to do enough calculations with it for it to matter.

你必须对你正在做的更复杂的事情提出一些近似值，这样你就有能力用它做足够的计算，让它变得重要。

The system is so complex that, to date, our best computer models are only crude approximations --- and are not sophisticated enough to test hypotheses about the causes of climatic change.

该系统如此复​​杂，以至于迄今为止，我们最好的计算机模型只粗略的近似值——而且还不够复杂，无法检验关于气候变化原因的假设。