单词 velumne 释义 ▪ I. ‖ velum|vilm|Pl. vela |vil|.[L. vlum a sail, awning, curtain, covering, veil.]1. †a. A screen or protection. Obs.1781Priestley in Young Autobiogr. (1898) v. 99 A glass velum, interposed between the retort and the recipient for t...