sierra /si'єәrә/ 📖 中文释义 n. 呈齿状起伏的山脉 🧩 词形变化 复数 sierras 📘 English Definition(英文释义) n. a range of mountains (usually with jagged peaks and irregular outline)n. a Spanish mackerel of western North America ← Sierpinski curve program S 字母词表 Sierra Leone →