Breakthrough
来自Big Physics
wiktionary
From break + through. Compare German Durchbruch and Dutch doorbraak(“breakthrough”, literally “through-break”).
etymonline
breakthrough (n.)
also break-through, 1918, in a military sense, from the verbal phrase; see break (v.) + through (adv.). The verbal phrase is attested from c. 1400 in the sense "overcome or penetrate a barrier." Meaning "abrupt solution or progress" is from 1930s, on the notion of a successful attack.
