costa /'kɒstә/ 📖 中文释义 n. 肋骨, 肋脉, 叶的中脉[医] 肋 🔗 释义中的汉语词 肋骨 🧩 词形变化 复数 costas 📘 English Definition（英文释义） n. a riblike part of a plant or animal (such as a middle rib of a leaf or a thickened vein of an insect wing) ← cost/performance ratio C 字母词表 Costa Brava →