单词	round back
释义	round back noun : the backbone of a book when distinctly convex compare square back Word History Etymology round entry 2
随便看	runniness runninesses running running (over) running about with running account running across running after running against running along running amok running around like a chicken with its head cut off running around with running at running away running away with running back running backstay running bale running battle running birch running blackberry running block running board running bond

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。