英语词汇“differential fertility”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	differential fertility
释义	differential fertility noun : variation in fertility of different groups or classes in the population < relation of economic status to differential fertility >
随便看	FP fp FPA FPAAC FPAEC FPC FPM FPO fprf FPS fqcy fqt Fr FR fr fr FR fra fra frabjous frabjously fraca fracas frack fractal

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