having three units or partsa threefold approach to solving the problem
a threefold approach to solving the problem
treble, triadic, tripartite, triple, triplex
triplicate
before the 12th century
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。