留美老师带你每天说英文 第456期:血液的作用

台湾籍旅美老师今天交给我们的句子是：

Blood is the tissue that not only carries cells that transport oxygen, for example, the red blood cells, or fights infectious diseases, but it also carries messenger molecules, hormone-like factors that transport information from one cell to another, from one tissue to another, including the brain.
血液不只是夹带例如红血球这样的输氧细胞的组织，或是抵抗传染病，同时也夹带了像荷尔蒙这样的讯息因子，从一个细胞到另一个细胞，一个组织到另一个组织，在大脑里也一样。