rudimentaryKK [ˏrudəˋmɛntɚi] /ˌɹudəˈmɛntɚi/發音形容詞1基本的、初步的、粗淺的She has only a rudimentary knowledge of Spanish grammar.她對西班牙文文法只有基本的認識。2簡陋的、粗糙的The villagers built a rudimentary shelter out of branches.村民用樹枝搭起一個簡陋的遮蔽處。3未發育完全的、退化的生物學The bird has rudimentary wings and cannot fly.這種鳥的翅膀發育不完全,無法飛行。