It's working its way into your blood stream.

=-什么 -我们还有不到一分钟的时间。

We know that in humans the blood stream carries immune cells around our body.

我们知道，人类的血液携带着免疫细胞流经身体各处。

The victims suffered rashes and fevers; blood streamed from their eyes, noses and mouths.

感染者会起皮疹并发烧；同时血从他们的眼睛、鼻子和嘴里流出。

They can be breathed into the lungs and then move on to the blood stream.

它们可以被吸入肺部，然后进入血液流。

Because aspirin when they are absorbed into the blood stream works like a platelet lubricant.

因为阿司匹林在被血液吸收时就像血小板润滑剂。

Radiation hits whatever you point it at, and your blood stream carries chemo-therapeutics all over your body.

放疗会攻击所有被照射的细胞，而血液会将化疗的药物传递至全身。

It actually introduces carbon dioxide into your blood stream, which calms your nerves and helps you focus.

它实际上把二氧化碳引入你的血液中，使你的神经平静下来，帮助你集中注意力。

Being stationary reduces blood flow and the amount of oxygen entering your blood stream through your lungs.

在静止不动之下会让血液流量以及经肺部进入血液的氧含量变少。

As these hormones travel through your blood stream, they easily reach your blood vessels and heart.

所有的这些激素在你的血液系统中穿行着，它们可以轻易的到达你的血管和心脏。

8 hours after quitting, an inhaled carbon monoxide clears, allowing oxygen levels in the blood stream to return to normal.

停止吸烟后8小时，体内吸入的一氧化碳被清除，这使得血流中的氧含量恢复正常。