birthrate /'bә:θreit/ 📖 中文释义 n. 出生率 🔗 释义中的汉语词 出生率 🧩 词形变化 复数 birthrates 📘 English Definition(英文释义) n. the ratio of live births in an area to the population of that area; expressed per 1000 population per year ← birthplaces B 字母词表 birthrates →