用: 40分钟跑完全程 run the course in 4 ...羽毛: plume; feather; pinna; indum ...管: pipe; tube削: pare; whittle; cut尖: pointed; tapering制成: be made from; manufacture的: 4次方是 The fourth power of 2 i ...钢笔: pen; fountain pen笔: pen; pencil; stylus; writing ...用羽毛: duvet钢笔画: drawing with pen and ink; pen drawing; pen-and-ink drawing被褥用羽毛: feathers for bedding床用羽毛: bedding feather用羽毛盖上: fledge钢笔画的: pen-and-ink用羽毛装饰的: plumy钢笔画用纸板: scraboard; scratch board豪猪羽毛管: porcupine quills羽毛管浮子: quill float制成的: finished; madeup; ready-made笔尖细的钢笔: fine pen这是谁的钢笔: whose pen is this最先进的钢笔: most advanced pen线条画〔如钢笔画、铅笔画等〕。: line drawing乌鸦的羽毛管: crowquill
