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单词
replacement fertility
释义
replacement fertility
noun
The birth rate at which the population level remains constant, taking into account the mortality rate and other factors.
Origin
1960s
.
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POSSLQ
poss stick
poss-tub
possum
possum belly
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'possuming
post-
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postabdominal
postable
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postabortion
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post-accelerate
post-accelerating
post-acceleration
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postage book
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postage due
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更新时间:2025/12/23 14:41:01