音标:[bə:θ reit] ; 柯林斯词典等级:1 级;
n. 人口出生率
词型变化:名词复数形式 : birth rates

birth rate的用法和样例:

例句

用作名词(n.)
  1. The birth rate in this city is almost constant.这城市的出生率几乎是不变的。
  2. What is the most effective method of birth control?控制出生率的最有效的方法是什么?
【近义词】

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This is the VOA Special English Health Report. A 16-year-old mother receives care for her baby at a mobile health clinic in Garland, Texas, in a 2006 photo More than seven hundred thousand teenagers a year get pregnant in the United States. The teen

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