A porcupine is covered with prickles.箭猪身上长满了刺.A little porcupine made a house by the side of the river.小刺猬在小河边上造了一幢小房子.One of the sharp hollow spines of a porcupine or hedgehog.豪猪或刺猬身上硬而中空的保护刺....
He snapped the cap on his ballpoint.他吧嗒一声把笔帽扣在了圆珠笔上。I changed the ink cartridges in my ballpoint pen.我换了圆珠笔里的墨水芯.You can buy the ballpoint pen anywhere.你到哪儿都能够买到这种圆珠笔.The diary comes complete with a gold-coloured ballpoi...