您要查找的是不是：
- the four chambers of the heart. 心脏的四个心室
- The heart consists of four chambers in which blood flows. 心脏由四个血流通过的心房（室）组成。
- North, south, east, and west are the four cardinal points of the compass. 东、西、南、北是罗盘上的四个方位基点。
- The widening of the chambers of the heart between two contractions when the chambers fill with blood. 心脏各室的被动有节律的膨胀或扩张，在此期间为血液所充满。
- The heart has four chambers and is red. 心脏也是红色的，有四个心房。
- Let's get to the heart of the matter. 让我们谈谈这件事的核心部分。
- The ventricles are the two lower chambers of the heart, and the atria are the two upper chambers. 所谓心室是指心脏较下方的两个腔室，而心房是指心脏上部的两个腔室。
- During each normal heartbeat, the muscle cells in the upper chambers of the heart, the atria (AY-tree-uh), contract. 在心脏正常跳动时，心房的肌肉细胞会首先收缩，这样血液就会从心房压入心室。
- First, the two upper chambers of the heart, called atria (AY-tree-uh), contract. 首先，心脏上不得两个腔室（心房）收缩。
- Each of the four cables contains26,108 lengths of wire. 这四根缆索。每一根都包含有26,108根钢丝。
- This contraction squeezes blood into the lower chambers of the heart, which are called ventricles (VEN-trih-kuls). 这种收缩会将血液压入心脏下部的两个腔室（心室）。
- The heart is one of the body's vital organs. 心脏是人体的重要器官之一。
- She had a return of the heart attacks. 她心脏病又发作了。
- Experience to Introduce The Lead Through Tortuous, Prolonged or Anomaly Superior Caval Vein into Chamber of The Heart. 静脉畸形、迂曲、狭窄时永久起搏导线置入的方法探讨。
- This is the least useful of the four books. 四本书中这一本最无用处。
- He waited in an outer chamber of the great house. 他在这座大屋子的外室等候着。
- The heart has four chambers. 心脏有两房两室。
- Name one of the four meanings of this emblem. 说出其四层含义之一。
- Old Bob popped off last night because of the heart attack. 昨天晚上老鲍勃由于心脏病突然死了。
- One of the four largest art museums. 四个最大的美术馆之一。
