alpha      
 noun [ C or U ]  language, mathematics, science uk/ˈæl.fə/ us/ˈæl.fə/ (symbol A, α)
 (希腊语字母表的第一个字母)
the first letter of the Greek alphabet
 alpha  
adjective [ before noun ] uk/ˈæl.fə/ us/ˈæl.fə/
  (SOFTWARE)      
  computing specialized初期的(用来描述在研发初阶的软件) 
Alpha software is at the first stage of development.
  an alpha version of the program 该程序研发初期版本 
   (PERSON)      
 主导型人格|阿尔法人格
used to describe someone who is strong or powerful, and who likes to be in charge of others
  She demonstrated a knack for managing the difficult alpha personalities on her team. 对于管理团队中那些难以相处的阿尔法性格的人,她特别有一套。 
 Compare: beta adjective