Because oral bacteria enter the bloodstream and travel throughout the body .

因为口腔细菌进入血流并且流经全身。

They breathe in air , then extract the oxygen and pass it into the bloodstream , where it 's rushed off to the tissues and organs that require it to function .

他们吸入空气，然后把氧气提取出来并进入血液的流动中，被带到需要氧气来维持功能的组织和器官中。

Although that mops up hiv from the bloodstream , the virus then passes from the red blood cells to the white immune-system cells most susceptible to infection .

尽管这样会使得hiv从血流中消失，但是病毒从而会从红细胞转移到最易感染的免疫系统白细胞。

Swiss pharma house novartis thinks pills needn 't merely deliver medicine to the bloodstream , but could also monitor its effects and transmit data to physicians .

瑞士诺华制药公司认为，药片不应只向血流中输送药物，还应该能够监测其效果，并把数据传送给医生。

While asleep , suffers may stop breathing for between 10 to 25 seconds at a time , depleting the bloodstream and brain of vital oxygen supplies .

患者睡觉的时候可能会有10到25秒的时间是没有呼吸的，这会减少血流和大脑的供氧量。