| 释义 |
breakthroughn.(stress on break) (重读break) A point of sudden success after a long process of experimentation, trial and error. 突破性进展;突破点。◆ The U. S. Space Program experienced a major breakthrough when Armstrong and Aldrin landed on the moon in June of 1969.当阿姆斯特朗和奥尔德林在1969年月登上月球时,美国太空计划经历了一次重大突破。 |