breakthrough
n.
1918, in a military sense, from break, v. + through, adv.. The verbal phrase is attested from c.1400. Meaning "abrupt solution or progress" is from 1930s, on the notion of a successful attack.
| 词汇 | breakthrough |
| 词根词缀 | Online Etymology Dictionary breakthrough n. 1918, in a military sense, from break, v. + through, adv.. The verbal phrase is attested from c.1400. Meaning "abrupt solution or progress" is from 1930s, on the notion of a successful attack. |
| 随便看 |
英语词根词缀词典收录了54763条英语词根词缀词条，基本涵盖了全部常用英语词汇的词根、词缀及词根记忆法解析，是记忆英语词汇的必备工具。