Over the other surface of the heart lies another layer of connective tissue, the epicardium.心脏的外表面是由另一层结缔组织, 即心外膜所覆盖.Here are petechial hemorrhages seen on the epicardium of the heart.这是在心外膜看到的点状出血....
细胞不断地分裂更新,这是人体发育过程的一部分。Cells divide and renew as part of the human growth process.通过改善计算机的设计,这些机器不断得到更新。These machines are constantly updated by improving the design of the computers.实验室最近经过更新,可以上更高阶的课程了。The lab has rece...