Really the only option they had was to rely on something called dead reckoning, basically figuring out where you are by estimating your speed and compass heading to plot your journey.

实际上他们唯一的选择依靠一种名为航位推算的方法，大体通过估计航速和指南针指向来确定你的位置，从而规划航程。

That results in a range that spans decades, not centuries.

地层学断代推算出的时间范围几十年，而不几百年。

There could be 10 times more fish biomass here than previously thought.

这里的鱼类生物质含量之前推算的十倍。

But it's one thing to know how much power the sun is producing.

但推算太阳产生的能量一回事。

His CAB adviser reckons he will never again earn what he used to, so is helping him cut costs he once considered essential, like internet access and mobile phones, from his family's budget.

他在公民咨询局（CAB）的顾问推算出他的收入将不会再回到从前的水平，于便帮助大从他的家庭预算中削减诸如网费和话费等，那些曾经被认为必要的开支。

Essentially, they took these other measurements and predictors, like percent rep max between group rep differences, velocity loss, and RPE, and then using subjective calculations, they equated a corresponding estimated reps in reserve.

基本上，他们其他测量和预测指标，比如一组内重复次数差异的百分比、速度损失和主观力感（RPE），然后通过主观计算，推算出相应的估计持续重复次数。

The reason we think that is that using modern computer techniques, you can wind back the night sky and say, " Where would the moon have been? Where would the stars have been? "

因为通过现代计算机科技的模拟，我们能推算出过去的夜空，得知当时月亮和星星的位置。

I'll get the almanack; and as I have heard devils can be raised with Daboll's arithmetic, I'll try my hand at raising a meaning out of these queer curvicues here with the Massachusetts calendar.

我要去把我的历书拿来，因为我听说能达博尔的数学推算出魔鬼，我要马萨诸塞的历书来试试手，推算推算这些弯弯曲曲的古怪记号的意思。

So a second measure to consider is its levels of risk-weighted assets (RWAs), in which the size of the balance-sheet is adjusted to reflect its riskiness.

如此一来，第二种要考虑的评估方法就银行的风险加权资产等级，即通过资产负债表的规模标准推算贷方的风险。

Besides, according to the calculations of naturalists, one of these animpas only six feet long would have tentacles as long as twenty-seven.

此外，按博物学家的推算，一只这样的动物，长只有6英尺，它的触须就可能长达27英尺。

Which is exactly what Kelvin did - except with the earth. And scientific rigor. He took

开尔文将这个理论运到推算地球的年龄中。

They do, however, limit the possible range of dates.

然而它们确实缩短可推算的时间跨度。

And then what happens from there, I mean, that's like 100 billion years.

从那时起会发生什么，我的意思，那大约1000亿年之后的事。根据我们现在所知，这样的推算合理的。

Only a thousand Daler, according to the old reckoning.

根据旧的推算， 只有一千 Daler。

And using meteorites and using this dating we figured out that the earth now, and this is kind of our accepted value, is about 4.55 billion years ago.

通过陨石和年代测定， 我们推算出现在的地球，也就我们公认的值，大约 45.5 亿年前。

Arrhenius found that you can even reverse engineer your study of a solution and by measuring it's electrical conductivity, figure out how concentrated it is.

阿伦尼乌斯发现，你可以反向研究溶液，通过测量其电导率，推算出它的浓度。

The CLIMA project I'm leading is use the data directly to inform the model to achieve higher quality of predictions and projections for the future.

我领导的CLIMA项目直接使数据来改进模型，以实现对未来预测和推算的更高精度。

Once the planet's presence was confirmed, the next task was to use the observations to derive the physical properties of the planet.

一旦确认这颗行星的存在，下一步就利观测数据来推算这颗行星的物理特性。

And you can extrapolate other Australian time zones on the basis of what time it is in Melbourne, 7am in Melbourne.

你可以根据墨尔本的时间推算其他澳大利亚时区，墨尔本现在早上7点。

Extrapolated out to the total number of known illuminated manuscripts, that means at least 110,000 of them were created by women.

推算到所有已知的照明手稿，这意味着至有110,000份由女性创作的。