That change in distance is tiny, less than a billionth of a meter.

这种间隙的改变很微小 小于十亿分之一米。

The result is an emulsion of droplets between 100 and 300 nanometres (billionths of a metre) across.

结果会产生一种乳状液，其微滴直径在100到300纳米（纳米为一米的10亿分之一）之间。

Less than a hundred nanograms — that's billionths of a gram — is enough to kill an adult.

只有不到 100 纳克——大约只有十亿分之一克——已经足够送一个成年人去阎王爷了。

The UN forecasts that the 12th billionth human will never be born at all.

联合国预测，第12个十亿人将不会再出生。

As the 8 billionth person is born, here's how Africa will shape the future of the planet's population.

随着第 80 亿人的出生，非洲将如何塑造地球人口的未来。

These are substances with features measured in nanometres, or billionths of a metre, which let them bend light in unusual ways.

这些材料是以纳米为单位，或者是以一米的十亿分之一为单位的特别物质，所以可以以特别的方式改变光的方向。

This fiber laser is pulsing anywhere and those pulses are lasting as little as a billionth of a second.

这种光纤激光器可以在任何地方发出脉冲，这些脉冲的持续时间只有十亿分之一秒。

Like, a billionth of a billionth of a billionth of a billionth of a second after the beginning.

就像，开始后的十亿分之一十亿分之一秒。

In exactly 5 minutes the mass of this mineral will change by negative 5 billionths of a gram.

恰好 5 分钟内，这种矿物的质量将发生负十亿分之五克的变化。

And it's still like a billionth of that.

索伦: 而且它仍然像那的十亿分之一。

For the millionth and billionth time.

百万次和十亿次。

These wires are super tiny, each just a billionth of a meter (three-billionths of a foot) wide.

这些电线非常细小， 每根电线只有十亿分之一米（十亿分之三十英尺）宽。

A couple of years ago, the company sold its one billionth tract.

几年前，该公司售出了第十亿张唱片。

It's a billionth the size of any of the objects in my survey.

它是我调查中任何物体大小的十亿分之一。

Essentially to turn on all of the glowing molecules within a single nanometer; that's a billionth of a meter.

本质上是打开一个纳米范围内的所有发光分子；那是十亿分之一米。

This clock, called a hydrogen maser, can keep time to within a billionth of a second.

这个称为氢脉泽的时钟可以将时间保持在十亿分之一秒以内。

That's six billionths of a second, six billionths.

也就是十亿分之一秒，六十亿分之一。

Stronger than FM radio signals, these RF waves are still a billionth the intensity of known carcinogenic radiation like X-rays.

这些射频波比FM无线电信号强，仍然是X射线等已知致癌辐射强度的十亿分之一。

Each mirror had to be aligned to within the billionth of a meter, to form a single, primary mirror.

每面镜子都必须对齐到十亿分之一米以内，以形成一个单一的主镜。

One ppbv means that if you take a volume of air on Mars, one billionth of the volume of air is methane.

1ppbv指如果你在火星上吸入1体积的空气，那么其中十亿分之一就是甲烷。