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 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。

In the lab, adult teeth soaked in white wine for a day suffered a loss of both calcium and a mineral called phosphorus to depths of up to 60 micrometers in the enamel surface, which the researchers say is significant.

实验室中，浸泡在白葡萄酒中的恒牙（成年牙）60微米的表层牙釉质中出现了钙元素和矿物元素磷的流失。研究这腐算是严重的了。

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

根瘤菌是一长达3微米的固氮菌，没有它，不可能实现这农业生产规模的。

Any plastic that's smaller than a few micrometers is called a nanoparticle, and research has found that these microscopic particles can even pass through biological barriers, such as cell membranes.

小于几微米的塑料可被为纳米微粒，研究发现这些微小颗粒可穿过类似细胞膜的生物屏障。

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，对于火箭科学来说，如果相差一厘米，一微米，就可能导致灾难性的故障发生。

This flour sieve has 300 micrometer mesh.

这个面粉筛有 300 微米的网眼。

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

精子的速从每秒18.3微米上升到30.1微米。

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

虽然皮肤是由许多层组成的，但它的总厚不到100微米。

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在1-10微米之间。

A micrometer is one millionth of a meter.

1微米是百万分之一米。

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层大约有100微米厚，但一些高端机器打印出来的一层仅有16微米厚。

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

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

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

平均大小的细菌长约为 2 微米，即百万分之二米。

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。

To compensate for its length, it's really thin, just a few micrometers in diameter.

为了弥补长的不足，它变得非常纤细，直径仅有几微米。

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。