but conj. 但是；而是；然而 adv. 僅僅，只 prep. 除…以外 n. (But)人名；(俄、羅)布特；(越)筆busywork 消磨時(shí)間的工作；為打發(fā)時(shí)間而布置的工作busysily adv.忙碌地；繁忙地busyness (n.) busyness n.繁忙；忙碌busying adj.忙的；繁忙的；熱鬧的；(電話)占線的vt.使忙于busybuzz n.占線音(忙音)busybody (n.) busybody n.愛(ài)管閑事的人；好事的人busybodies [ busybody ]的復(fù)數(shù)形式busybodied adj.愛(ài)管閑事的；干涉的busy-work (n.) busy-work =busyworkbusy-loop [計(jì)算機(jī)科學(xué)技術(shù)]忙回路忙迴路busy-line effect [電子、通信與自動(dòng)控制技術(shù)]熱線效應(yīng)busy-flash signal 占線閃光信號(hào)busy-buzz n.忙蜂音；占線蜂音busy-backing [計(jì)] 忙碌地回答busy-back tone [電子、通信與自動(dòng)控制技術(shù)]忙音占線音忙回音佔(zhàn)線音busy-back signal 點(diǎn)線信號(hào)