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单词
sex ratio
释义
WordReference Random House Unabridged Dictionary of American English © 2024
sex
′
ra′tio,
[
Sociol.
]
Sociology
the proportional distribution of the sexes in a population aggregate, expressed as the number of males per 100 females.
1905–10
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更新时间:2025/7/23 12:12:00