focus onvt.集中在focusn.焦点；焦距；中心v.（使）集中；聚集focused point collimator点聚焦型准直器focuses fragment warhead聚焦战斗部focused-image hologram聚焦象全息图focusing current current聚焦电流focus on infant children幼者本位focussed-jet amplifier聚流射流放大器focused explosion energy聚能管Focus on the positives.关注积极的方面。focused crawling strategy爬行策略focus of action awareness动作意识焦点