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，但它总厚不到100微米。

A normal bacteria measures one to five micrometers long.

正常细菌有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。

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

普通3D打印机打印出大约有100微米厚，但些高端机器打印出仅有16微米厚。

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

对比看，个典型细菌细胞在1-10微米之间。

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

精子速从每秒18.3微米上升到30.1微米。

And its volume would be one cubic micrometer.

它体积是立方微米。

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

根瘤菌是种长达3微米固氮菌，没有它，不可能实现这种农业生产规模。

This flour sieve has 300 micrometer mesh.

这个面粉筛有 300 微米网眼。

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

气体交换距离只有半微米左右。

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

我们说是微米， 或两微米， 或300微米。

But our samples are only a couple hundred micrometers wide.

但是我们样品只有几百微米。

His work connected with" micro" because he produced micro-cards, microfilm, micrometer, micronutrient and microcomputer.

他工作与" 微" 有关，因为他制造影卡片、缩影胶片、测微器、微量营养素和微型电子计算机。

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.

你现在到了微型王国，你身高不足两微米，和大肠杆菌大小差不多。

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，所以最后得到材料变得厚了很多，可以达到几厘米厚。

And that was extremely helpful, but it didn't solve the problem of seeing things that were smaller than 0.2 micrometers.

这非常有帮助，但它并没有解决看到小于 0.2 微米事物问题。

You know with rocket science, if you're off by one centimeter, by one micrometer, you can cause catastrophic failures to take place.

你知道，对于火箭科学说，如果相差厘米，微米，就可能导致灾难性故障发生。