英:/''kælɪndz/ 美:/'ˈkæləndz/
n. （羅馬古曆的）每月第一日
I know what he promised to treat me a meal is on the Greek calends.
我知道他說要請我吃飯的事是永遠不會兌現的。
Calends（又拼作Kalends）是源自羅馬曆法的專業術語，具體釋義如下：
指古羅馬曆法中每月的第一天，相當于中國農曆的"朔日"或"初一"。該詞源于拉丁語"kalendae"，原意為"宣告日"，因古羅馬祭司會在此日宣布新月周期和節日安排。
希臘曆中的特殊含義
由于希臘曆法沒有"calends"概念，短語"on the Greek calends"（希臘人的朔日）成為習語，表示永遠不會發生的事情。如例句：
The debt would be paid on the Greek calends.（這筆債會拖到希臘朔日——即永無償還之日）
文化對比
中文文化中類似重要性的日期是正月初一，如例句提到：
Chinese attach great importance to New Year's Eve, not less than calends of the first month.（中國人重視除夕不亞于正月初一）
注意：該詞與"calendar"（日曆）同源，但現代英語中已發展為兩個獨立詞彙。如需查看更多用法示例，可參考和中的詞典來源。
Word Definition:
Calends refers to the first day of a month in the ancient Roman calendar.
Word Usage:
In ancient Rome, debts were often due on the calends of each month.
Synonyms:
There are no direct synonyms for the word calends, as it is a specific term used in the ancient Roman calendar.
Antonyms:
There are no direct antonyms for the word calends, as it is a specific term used in the ancient Roman calendar.
Word Example:
English: The calends of March marked the beginning of the festival of Mars.中文：三月的初一标志着馬爾斯節的開始。
Word Origin:
The word calends comes from the Latin word kalendae, which was used to refer to the first day of the month in the ancient Roman calendar.
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