ves·tig·ial /vɛˈstɪʤ(ɪ)əl/ 形容詞
遺蹟的,剩余的,殘翅,殘留的,廢退的
Ves·tig·i·al a. Of or pertaining to a vestige or remnant; like a vestige.
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vestigial
adj : not fully developed in mature animals; "rudimentary wings"
[syn: rudimentary]