a final touch; a crowning achievement; a culmination
同义词：finishing touch??/??capstone
a stone that forms the top of wall or building
同义词：capstone??/??coping stone??/??stretcher
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。