You use groundbreaking to describe things which you think are significant because they provide new and positive ideas, and influence the way people think about things.
例句
...his groundbreaking novel on homosexuality.他关于同性恋题材的开创性小说...groundbreaking research.创新研究
英英词典释义
Noun
1. the ceremonial breaking of the ground to formally begin a construction project
Adjective
1. being or producing something like nothing done or experienced or created before;
"stylistically innovative works""innovative members of the artistic community""a mind so innovational, so original"