单词	thumb index
释义	thumb index noun : a series of usually labeled notches cut in the fore edge of a book (such as a dictionary) to facilitate reference Example Sentences a dictionary that has a thumb index Word History First Known Use 1903, in the meaning defined above
随便看	portion natural portion out portional portioned portioned (out) portioned out portioner portioners portioning portioning (out) portioning out portionist portionists portionless portions portions (out) portions out Portland Portland arrowroot portland blast-furnace slag cement Portland Canal Portland cement portland sago Portland stone portland tern

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。