Nanoplastics are less than 1 micrometer in size.

纳米塑料的尺寸小于 1 微米。

These cracks are likely only micrometers long.

这些裂缝可能只有几微米长。

A micrometer is one millionth of a meter.

1微米是百万分之一米。

Though the skin is made of many layers, its total thickness is less than a hundred micrometers.

虽然皮肤是由许多组成的，但它的总厚度不到100微米。

A normal bacteria measures one to five micrometers long.

正常的细菌有1到5微米长。

Microplastics can be 5 millimeters long at most or as small as one micrometer.

微塑料最长可达5毫米，或小至1微米。

An average-sized bacterium is about 2 micrometers, or 2 millionths of a meter, in length.

平均大小的细菌长度约为 2 微米，即百万分之二米。

Typical 3D printers create layers approximately 100 micrometers thick, but some high-end machines can print as small as 16 micrometers.

普通的3D打印机打印出来的一大约有100微米厚，但一些高端机器打印出来的一有16微米厚。

To put this in perspective, a typical bacteria cell has a width of between 1-10 micrometers.

对比来看，一个典型的细菌细胞的宽度在1-10微米之间。

Their speed goes from eighteen point three micrometers per second up to a whopping thirty point one.

精子的度从每秒18.3微米上升到30.1微米。

Most fall between 0.02 and 0.4 micrometer in length, too small to be seen with normal microscopes!

大多数病毒的长度在 0.02 到 0.4 微米之间，小到无法用普通显微镜观察到！

And its volume would be one cubic micrometer.

它的体积是一立方微米。

Rhizobia is a nitrogen-fixing bacteria up to 3 micrometers long and without it, that sort of agricultural production is impossible.

根瘤菌是一种长达3微米的固氮菌，没有它，不可能实现这种农业生产规模的。

The distance for gas exchange is only about a half a micrometer.

气体交换的距离只有半微米左右。

This flour sieve has 300 micrometer mesh.

这个面粉筛有 300 微米的网眼。

We're talking one, or two, or 300 micrometers.

我们说的是一微米， 或两微米， 或300微米。

But our samples are only a couple hundred micrometers wide.

但是我们的样品只有几百微米宽。

But things change dramatically if we make the cube ten times bigger, measuring ten micrometers on each side.

但是， 如果我们将立方体放大十倍，每边测量十微米， 情况就会发生巨大变化。

You've entered the microscopic realm and are now less than 2 micrometers tall, about the size of an e coli bacteria.

你现在来到了微型王国，你的身高不足两微米，和大肠杆菌的大小差不多。

That means you don't have to cool it down as fast, so the material can be thicker, centimeters instead of micrometers.

这也就意味着你不需要那么快降温，所以最后得到的材料变得厚了很多，可以达到几厘米厚。