posthasteadj.
英 'pəʊst'heɪst | 美 'post'hest
中文adj. 特快的，快速的\nn. 特快，火速\nadv. 特快地，尽快地
特快的，快速的
n. 特快，火速
adv. 特快地，尽快地
词根词源
posthaste (adv.)1590s, from a noun (1530s) meaning "great speed," usually said to be from "post haste" instruction formerly written on letters (attested from 1530s), from post (adv.) + haste (n.). The verb post "to ride or travel with great speed" is recorded from 1550s.
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