单词：alan_bartlett_shepard_jr. 

名词

• 
  [1.n.alan_bartlett_shepard_jr.] (同义词:[Shepard]  [Alan_Shepard]  [Alan_Bartlett_Shepard_Jr.]  )
• 
  注释列句：astronaut who made the first United States' suborbital rocket-powered flight in 1961 (1923-1998)
• 实 例 -> [astronaut( n. 太空人, 宇航员 )]