go-aheadn.
英 'ɡəuə,hed | 美
中文n. 前进，进步；放行信号\nadj. 前进着的
前进，进步；放行信号
adj. 前进着的
词根词源
go-ahead (adj.)by 1840, "pushing, driving," from verbal phrase go ahead; see go (v.) + ahead (adv.). Go ahead as a command or invitation to proceed is from 1831, American English.
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