noun
technical 术语（诗歌的）扬抑抑格，长短短格 a unit of sound in poetry consisting of one strong or long syllable followed by two weak or short syllables
数据来源：WordNet
The megalopa of S.serrata has dactyl lower margin on the fifth abdominal segment which is different from three other Scylla species .
花脚蟳大眼幼体在第五腹节具有指状下缘，与其他三种明显不同。
dactyldactyldactyl