consisting of two members or parts that are usually joineddual axles
dual axles
binary, bipartite, double, double-barreled, double-edged, duplex, twin, twofold
mated, paired
single
unpaired
in 1597
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。