groundbreakingKK [ˋgraʊndˏbrekɪŋ] /ˈɡɹaʊndˌbɹeɪkɪŋ/发音形容词1开创性的、突破性的、划时代的Her groundbreaking research changed how doctors treat the disease.她那开创性的研究改变了医生治疗这种疾病的方式。名词1动土、破土典礼The groundbreaking for the new library is scheduled for next month.新图书馆的动土典礼定在下个月举行。用这个字练口说→