Certain chemicals are easily absorbed into the bloodstream, while others are not.

某些化学药品很容易溶于血液, 有些则不行。

Bacteria was introduced into his bloodstream through an unsterile needle.

细菌通过未消毒的进入了他的血流中。

Red blood cells transport oxygen through the bloodstream.

红细胞通过血液循环输送氧气。

Hormones are secreted into the bloodstream.

分泌的激素进入到血液中。

Nutrients are absorbed into the bloodstream.

营养素被吸收进血液。

Septicaemic plague occurs when infection spreads directly through the bloodstream, while the pneumonic form is the most virulent but least common.

肺炎性鼠疫是不需要经跳蚤或动物媒介，而是经空气吸入受感染飞沬播。

Approved by the FDA in 2001, the patch is sold by prescription and releases ethinyl estradiol (a type of estrogen), and a progestin called norelgestromin via the skin into the bloodstream.

FDA在2001年就已经证实，这种通过渗透皮肤来释放雌激素和孕激素的贴膜是一种处方类药物。