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....
生活总是让我们遍体鳞伤，但到后来，那些受伤的地方会变得更坚强。The world breaks everyone, and afterward, many are stronger at the broken places.有时候要到达谷底，才会慢慢变好。Sometimes things have to fall apart to make way for better things.人生就应该是快乐的，要抓住每一天，孩子们，让你们的生...
对于处在年龄两极的人,细菌性肺炎可能使流行性感冒复杂化.The bacteria pneumonia may complicate influenza at extremes of age.这个电池两极的电动势是3.6伏特.The electromotive force between the two poles of this battery is 3.6 v.为什么地球赤道的周长比两极的周长长那么多?Why is earth...