[Assistant] 42 US liquid gallons equals 672 US customary cups.

美国的42加仑液体相当于672美国特有的标准度量杯。

And there is a metric for this.

这是有度量标准的。

Now researchers have used that modern metric on ancient settlements.

现在，研究人员用现代度量标准测量古代住宅。

Reason 3: And the final reason, time is an imprecise metric.

最后一个原，是一个不精确的度量标准。

It happens gradually, along a metric known as the Norwood Scale, which describes the severity of hair loss.

根据一个度量标准逐渐发生的，这个度量叫诺伍德分型，描述了脱发的严重程度。

A " car length" is not a standardized unit of measure.

" 车身长" 不是个标准化的度量单位。

Caterpillar said their switch to metrics saved them millions of dollars.

Caterpillar 表示，向度量标准为节省了数百万美元。

A new standard for weights and measures was  established, along with a state-run tax system that would keep local corruption to a minimum.

建立了新的度量衡标准，以及将地方腐败降至最低的国营税收制度。

Then I pick a key metric, and I ask myself if the metric is specific, easy to objectively measure, and representative of true progress towards my goal.

然后我选择一个关键的度量标准，我会问自己这个度量标准是否具体，是否容易客观地度量，是否能够代表我朝着目标所取得的真正进展。

A useful metric therefore is the FEV1 to FVC ratio, which since the FEV1 goes down even more than FVC, causes the FEV1 to FVC ratio to go down as well.

此FEV1与FVC的比值可以作为有效的度量标准，为FEV1值下降较多，的比值将会同降低。

I find that a good metric has the following traits: it's very specific, it's easy to objectively measure, and a change in the metric indicates progress towards or away from my goal.

非常具体，很容易客观地度量，度量标准中的变化表明了向着或背离我的目标的进展。

By the late Middle Ages, the Hindu-Arabic decimal system mostly replaced Roman numerals and fractions in Europe, but efforts by scholars like John Wilkins to promote standard decimal-based measures were less successful.

到中世纪晚期，印度-阿拉伯十进制系统在欧洲主要取代了罗马数字和分数，但约翰·威尔金斯等学者推广标准十进制度量的努力却不太成功。

He was a stickler for standardization. He wanted  the wheels on carts to be the same distance apart so the ruts in the road would be uniform. He  also standardized all weights and measures.

是标准化的坚持者。 希望手推车上的车轮相距相同，这样道路上的车辙就会均匀。 还标准化了所有度量衡。