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 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。

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。

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。

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。

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。

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。

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。

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 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。

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。

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

也就是十亿分之一秒，六十亿分之一。

It takes a pulse of light about 3.3 billionths of a second, or 3.3 nanoseconds, to travel the distance of a meter.

光脉冲需要大约十亿分之 33 秒，或 3.3 纳秒，才能传播一米的距离。