seminal  
adjective uk/ˈsem.ɪ.nəl/ us/ˈsem.ə.nəl/
  (IMPORTANT)      
  formal具有开拓性的;有深远影响的 
containing important new ideas and having a great influence on later work
  She wrote a seminal article on the subject while she was still a student. 她在学生时期就写了一篇有关该主题的文章,文章影响深远。 
 He played a seminal role in the formation of the association. 他在协会的创立过程中起了奠基性作用。 
   (LIQUID)      
 [ before noun ] biology specialized精液的 
connected with semen
  seminal fluid 精液