car
di
nal
复数形式
cardinals
1
红衣凤头鸟, 红鸟
a North American songbird with a red beak, the male of which has bright red plumage
A cardinal, also known as the Northern Cardinal, is a strikingly beautiful bird native to North America. The male Cardinal is particularly notable for its vibrant plumage, bright red feathers, and distinctive crest on its head. The female, while less vivid in color, still displays a lovely combination of reddish hues with touches of brown. Cardinals are medium-sized songbirds with strong beak that is perfectly adapted for cracking seeds and nuts. Their melodious and rich whistling songs can often be heard in woodlands, gardens, and parks, adding a delightful touch to the surrounding environment. Cardinals are year-round residents in many regions, bringing a splash of color to snowy winter landscapes. They are known to be territorial birds and can be observed fiercely defending their feeding areas and nesting sites.
- The male cardinal sang loudly from a branch near the feeder.
雄性主红雀从喂食器附近的树枝上大声鸣叫。
- In winter, the cardinal's red feathers stand out against the snow.
在冬天，红雀的红色羽毛在雪地中格外显眼。
- They spotted a pair of cardinals building a nest in the maple tree.
他们发现一对主红雀在枫树上筑巢。
- The cardinal is a common symbol of vitality and hope in art.
北美红雀是艺术中活力和希望的常见象征。
- Birdwatchers often recognize the cardinal by its clear, whistling song.
观鸟者通常通过其清晰、口哨般的歌声来识别红衣主教鸟。
2
基数, 集合的势
(mathematics) the number of elements or members in a set, representing its size or quantity
- The cardinal of the set {1, 2, 3} is 3.
集合 {1, 2, 3} 的基数是3。
- To find the cardinal, count the elements in the set.
要找到基数，请计算集合中的元素。
- If a set is empty, its cardinal is zero.
如果一个集合是空的，它的基数为零。
- To determine the cardinal, we simply list and count the elements.
要确定基数，我们只需列出并计算元素。
- The cardinal of a set with repeated elements is still the total number of elements.
具有重复元素的集合的基数仍然是元素的总数。
同义词：
3
(in the Roman Catholic Church) one of a group of senior clergy who advise the Pope and elect his successor
- The cardinals gathered in the Sistine Chapel to elect a new Pope.
- Each cardinal wears a red hat symbolizing loyalty and sacrifice.
- The Pope appointed three new cardinals to the College of Cardinals.
- The cardinal delivered a sermon emphasizing humility and faith.
- Cardinals play a key role in shaping the direction of the Church.
4
a vivid shade of red, often resembling the color of a cardinal's feathers
- The artist mixed a hue of cardinal to capture the sunset's glow.
- The flag featured bold stripes of white and cardinal.
- Cardinal became the school's official team color.
- Painters often use cardinal to evoke warmth and intensity.
同义词：
5
基数, 基数词
(grammar) a part of speech that is used in counting or showing a quantity
- In the phrase "four dogs," four is a cardinal.
在短语“四只狗”中，四是基数词。
- The teacher explained the difference between cardinals and ordinals.
老师解释了基数和序数之间的区别。
- The grammar exercise asked students to identify all cardinals in the text.
- Children first learn cardinals before understanding ordinal numbers.
孩子们首先学习基数，然后才理解序数。
- In some languages, cardinals agree in gender with the nouns they modify.
在一些语言中，基数词在性上与它们修饰的名词一致。