Seminal is used to describe things such as books, works, events, and experiences that have a great influence in a particular field.
significant , ground-breaking , influential
author of the seminal book 'Animal Liberation'
有着巨大影响的《动物解放》一书的作者。
The reforms have been a seminal event in the history of the NHS.
这些改革已成为英国国民保健体制历史上影响非常深远的事情。