在线词典笔套(~儿)笔帽; 用线、丝织成或用布做成的套笔的东西。拼音bǐ tào解释(~儿)笔帽; 用线、丝织成或用布做成的套笔的东西。英文释义the cap of a pen, pencil or writing brush; the sheath of a pen (made of cloth, silk or thread)