We designed these nanoparticles to be activated by these enzymes.

设计了这些会被酶激发的纳米颗。

We have to sneak our nanoparticle past the tumor defense system.

要让它骗过肿瘤的防御系统。

Let's take a closer look at how we can build this nanoparticle.

来仔细看一是 如何制造这种纳米子的。

Quantum dots are extremely small particles, called nanoparticles.

量子点是极小的颗，称为纳米颗。

It was a long time ago, it was 40 years ago that you first produced colloidal nanoparticles.

那是很久以前，40 年前，你第一次制造胶体纳米子。

They injected special nanoparticles into their eyes. These tiny particles let the mice see better in the dark.

他给老鼠的眼睛注射了特殊的纳米子。这些小微让老鼠在夜间看得更清楚。

And we can put different drugs into the nanoparticle core.

还可以在内 入不同种类的药物。

One way to tamper with the internal structure of concrete is to use nanoparticles.

使用纳米子可以改变混凝土内部结构。

And in this case, the immune cells in the liver are less likely to eat the biological nanoparticles.

这样，肝里面的免疫细胞就更不会吞噬这些纳米子。

This new nanoparticle technique is stealthy and it do[es] not need external power.

这种新的纳米颗技术是隐形的，它不需要外部电源。

The nanoparticles remained active for as long as two months.

纳米颗的活性长达两个月之久。

It`s based of these amazing properties of nanoparticles that only react to one specific molecule.

它是基于纳米子的神奇特性，它只对一个特定的分子有反应。

He got help from a Minnesota company that uses a technique of spattering nanoparticles.

他得到了明尼苏达州一家公司的帮助，该公司使用了一种喷溅纳米子的技术。

We can follow where those nanoparticles have been uptaken into, for example, human cells.

通过该仪器，能够了解纳米的摄入方向，譬如说人类细胞。

Recent researchTrusted Source suggests that these nanoparticles may also be harmful to coral reefs.

最近的研究可信来源表明，这些纳米子也可能对珊瑚礁有害。

First, let's start with the nanoparticle core.

首先，要制造纳米。

" We actually developed nanoparticles, so-called up-conversion nanoparticles, that actually can effectively be activated by this near-infrared light."

“实际上开发了纳米子，所谓的上转换纳米子，实际上它可以被这种近红外光有效地激活。”

And the immune cells in the liver eat the nanoparticles, preventing them from reaching the tumor.

肝里的免疫细胞会吞噬纳米子，让它到不了肿瘤。

And guess what? Our nanoparticle is considered a foreign object.

很显然，的纳米子 就是一种外来物体。

But as those nanoparticles degrade, they release the silver from their metallic core, which may be harmful.

但是随着纳米子的不断降解，它会从金属磁芯释有害的银离子。