billboardn.
英 'bɪlbɔːd | 美 'bɪlbɔrd
中文n. 广告牌；布告板\nvt. 宣传；介绍
广告牌；布告板
vt. 宣传；介绍
词根词源
billboard (n.)1845, American English, from bill (n.1) + board (n.1). Any sort of board where bills were meant to be posted. Billboard magazine founded 1894, originally a trade paper for the bill-posting industry. Its music sales charts date from 1930s.
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