anterior            
adjective [ before noun ] uk/ænˈtɪə.ri.ər/ us/ænˈtɪr.i.ɚ/
 anatomy specialized前部的,前面的;向前的 
positioned at or towards the front
  Specimens for examination were taken from the anterior side of the left ventricle from each heart. 检查样本取自每个心脏左心室的前侧。 
 Synonyms: fore forward (DIRECTION)front 
  formal先前的,先于的 
earlier in time
 Compare: posterior adjective