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The birthrate (often written as two words, birth rate) is how many babies are born in a place in a year, counted against how many people live there — often per 1,000 people. Newspapers use it when they talk about a country getting older, or about families having fewer children. It is a numbers word: calm, a little formal, for news and school. It does not describe how quickly one woman's labour is going, and it does not mean one baby's birth. You can also meet death rate beside it; the two are a pair in population talk.
出生率
組成birth + rate. Rate here means a number counted against another number, usually in a year.
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
birthratenoun
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The ratio of total live births to total population for a specific community or nation in a specified period; often expressed in births per thousand per year.
- In higher education a similar transformation is being pulled forward: Colleges were expecting a grim landscape in the later 2020s, because 2010s birthrates were so low, but now a decline in foreign enrollment and an acceleration of online learning will threaten marginal state schools and possibly close small liberal-arts colleges much sooner.
- In 2023, the birthrate fell for the eighth consecutive year to 0.72, the lowest in the world, from 1.24 in 2015, raising concerns over the economic shock to society from such a rapid pace.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。