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p.a. is a written short form of per annum, Latin for “for each year.” You see it after money, especially in British writing: a salary of £30,000 p.a., or interest at 5% p.a. It tells you the figure is for a whole year, not for a month or a week. People almost never say “p.a.” out loud; they say “a year” or “per year.” It belongs in ads, contracts, and formal notices, not in chat.
每年（薪資、利率等的書面縮寫）
組成Short for Latin per annum, “for each year”: per “for each,” annum “year.”
同家族的字
- annualsame Latin annus, “year”
- anniversarysame Latin annus, “year”
原始詞典資料2 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。
這個拼法也被記錄為下列字的變化形：
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。