前缀：twi- 二、两

twifortned 有二形的

twilight 黎明，黄昏，曙暮光

twifold 两倍，双重

twiblade 双叶兰

twiforked 有两叉的

词根词缀：rami-, ram-

【来源及含义】Latin: branch, branches, or a forked structure; ramus (singular), rami (plural); a general term for a smaller structure given off by a larger one, or into which the larger structure; such as, a blood vessel or nerve, divides

【同源单词】anterior ramus, axiramificate, bronchial ramus, mandibular ramus, meningeal ramus, posterior ramus