单词	book gill
释义	book gill noun : a gill found in the horseshoe crabs that consists of membranous folds arranged like the leaves of a book Word History First Known Use 1897, in the meaning defined above
随便看	scil scilicet scilla scillas Scillitan scillonian scillonians Scilly, Isles of scimetars scimitar scimitared scimitars scimiters scincellae scincellas scinci scincid Scincidae scincidaes scincides scincidoid scincids scincoid scincoidian scincoids

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。