letter-sound 字母發(fā)音letter-size adj.信紙大小的letter-shift n.換字母檔；字母轉(zhuǎn)移letter-rack (n.) letter-press (adj.) letter-perfect (adj.) letter-perfect adj.完全記住本身的；無(wú)訛的letter-paper n.信紙letter-opener (n.) letter-man (n.) letter-head (n.) letter-head 信頭letter-carrier (n.) letter-box slot [航空、航天科學(xué)技術(shù)]矩形翼縫letter-box inlet [航空、航天科學(xué)技術(shù)]矩形進(jìn)氣口letter-box (n.) letter-box 信箱； 郵箱,=mailbox(英)letter-bound adj.拘泥文句的letter-bomb n.書信炸彈letter-bag (n.)