HaubˈhɒbCOCA¹⁰⁰⁵⁰⁰BNC²³⁶²¹³⁺¹ 基本例句 豪布¹⁰⁰ Carl Haub: If a couple has two children themselves, then they basically replace themselves. But if they have1.2 or 1.3 or1.4, every succeeding generation gets smaller and smaller. 卡尔•霍伯：如果一对夫妻要两个孩子，那在数量上刚好能取代他们，但是，如果一对夫妻平均只生1.2，1.3或1.4个孩子，那后代人口的数量会逐代减少。 hjenglish