Word · CEFR A1 · Frequency #32141
cd
定期存单；存款证
a bank-issued certificate for money deposited for a fixed term, usually paying interest
- 1.
a type of giant elliptical galaxy
一种巨型椭圆星系
- 2.
a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores
一种柔软的蓝白色有延展性和可塑性的有毒二价金属元素；与锌矿共生
- 3.
the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin
国际单位制采用的基本光强单位；等于在2,046开尔文温度下每平方厘米黑体辐射的1/60光强
- 4.
a debt instrument issued by a bank; usually pays interest
银行发行的债务工具；通常支付利息
镉；坎德拉；巨椭圆星系；cD星系；一种巨型椭圆星系；一种柔软的蓝白色有延展性和可塑性的有毒二价金属元素；与锌矿共生
In use
I bought a CD of my favorite band yesterday.
This CD contains classical music from the 18th century.
She put the CD into the player and pressed play.
a CD
CD是可数名词，可用不定冠词a修饰。
I bought a CD yesterday.
我昨天买了一张CD。
CD + noun
CD可置于另一名词前作定语。
I need a new CD case.
我需要一个新的CD盒。
on CD
表示以CD为介质或格式。
The album is available on CD.
这张专辑有CD版。
Connections
Learner notes
Grammar Note
通常用作可数名词，如：a CD, two CDs。
High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Usage priority
Collins 词频等级为 3，建议结合例句记忆，而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.