We designed these nanoparticles to be activated by these enzymes.

们设计了这些会被酶激发的颗。

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

们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.

来仔细看一下们是 如何制造这子的。

Quantum dots are extremely small particles, called nanoparticles.

量子点是极小的颗，称为颗。

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，你们第一次制造胶体子。

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

他们给老鼠的眼睛注射了特殊的子。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.

们还可以在内核中 放入不同类的药物。

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

使用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子。

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

这新的颗技术是隐形的，它不需要外部电源。

The nanoparticles remained active for as long as two months.

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.

它是基于子的神奇特性，它们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，该公司使用了一喷溅子的技术。

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

通过该仪器，们能够了解的摄入方向，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，这些子也可能对珊瑚礁有害。

First, let's start with the nanoparticle core.

首先，们要制造核。

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

“们实际上开发了子，所谓的上转换子，实际上它可以被这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子，让它们到不了肿瘤。

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

很显然，们的子 就是一外来物体。

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

但是随着子的不断降解，它们会从金属磁芯中释放有害的银离子。