run-upn.
英 'rʌnʌp | 美
中文n. 助跑；预备阶段；抬高；急剧增长
词根词源
run-up (n.)1834, "an act of running upward," from verbal phrase, from run (v.) + up (adv.). Extended sense "period of time or sequence of events proceeding some important event" is from 1966.
关键词