groundbreakingKK [ˋgraʊndˏbrekɪŋ] /ˈɡɹaʊndˌbɹeɪkɪŋ/發音形容詞1開創性的、突破性的、劃時代的Her groundbreaking research changed how doctors treat the disease.她那開創性的研究改變了醫生治療這種疾病的方式。名詞1動土、破土典禮The groundbreaking for the new library is scheduled for next month.新圖書館的動土典禮定在下個月舉行。