Word · Frequency #2073
Dec
十二月
the 12th and last month of the year; December
- 1.
n the last (12th) month of the year；n (astronomy) the angular distance of a celestial body north or to the south of the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere
美国数字电子公司；[计] 数字设备公司
赤纬；美国数字电子公司；[计] 数字设备公司
In use
I need to know the star's dec before I set up the telescope.
The star chart lists each star's right ascension and dec.
Can you look up the dec of that planet in the sky atlas?
in Dec / on [date] Dec
Dec 通常大写，表示十二月。
The conference is scheduled for Dec 5th.
会议定于12月5日举行。
dec of [celestial object]
在上下文中，dec 表示 declination（赤纬），首字母通常小写。
The dec of the star is +45 degrees.
这颗恒星的赤纬为+45度。
Common mistakes
Please dec the volume.Please decrease the volume.
学习者误将'dec'当作动词'decrease'的缩写使用，但'dec'在英语中不是标准缩写，且无动词用法。表示减少应使用完整动词'decrease'。
He lived there for a dec.He lived there for a decade.
学习者误将'dec'当作名词'decade'的缩写，但标准缩写应为'dec.'且多用于书面，日常中更常用全写'decade'。此外，'dec'作为单词仅表示十二月或赤纬，不表示十年。
Connections
Collocations
- in Dec
- 在十二月
- The conference is in Dec.会议在十二月。
- Dec 25
- 12月25日
- We have a party on Dec 25.我们在12月25日有个派对。
- north dec
- 北赤纬
- The star's north dec is 45 degrees.这颗星的北赤纬是45度。
- dec angle
- 赤纬角
- The dec angle is measured from the celestial equator.赤纬角从天赤道测量。
- DEC computer
- 数字设备公司计算机
- He used a DEC computer at work.他在工作中使用了一台数字设备公司的计算机。
- DEC hardware
- 数字设备公司硬件
Learner notes
Memory Tip
DEC 是十二月缩写，联想 '底刻'，象征一年底部的重要时刻。
Context & Register
用于表示十二月，常见于日期、日历、计划等书面缩写，语境中性偏正式。
Grammar Note
Dec是December的缩写，也是天文学中赤纬的符号，作名词时通常可数。
Pronunciation & Spelling
All listed words rhyme with /dɛk/, the pronunciation of 'dec' when used as an abbreviation for 'declination' or 'December' in informal contexts. However, 'dec' for 'December' is often said as the full word /dɪˈsɛmbər/, which does not rhyme. Words with '-eck' and '-ech' are spelling variations; only 'spec' shares the exact '-ec' spelling ending.
Usage priority
Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from ECDICT, WIKTIONARY.