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a reindeer
reindeer 是可数名词，单数形式前用 a/an。
A reindeer was standing by the road.
一只驯鹿站在路边。
驯鹿
先理解核心含义，再看它在真实句子里的用法。
驯鹿
Arctic deer with large antlers in both sexes; called reindeer in Eurasia and caribou in North America
A reindeer was standing by the road.
一只驯鹿站在路边。
任何栖息于北极和亚北极地区的驯鹿(Rangifer tarandus)物种,有多个亚种。
Any Arctic and subarctic-dwelling deer of the species Rangifer tarandus, with a number of subspecies.
北极鹿,两性都有大鹿角；在欧亚大陆称为“驯鹿”,在北美称为“北美驯鹿”。
Arctic deer with large antlers in both sexes; called `reindeer' in Eurasia and `caribou' in North America
此类动物的任何物种、亚种、生态型或其他科学分类。
Any species, subspecies, ecotype, or other scientific grouping of such animals.
A reindeer uses its wide hooves to walk on soft snow.
驯鹿用宽大的蹄子在松软的雪上行走。
The local zoo feeds the reindeers hay and apples every morning.
当地动物园每天早上给这些驯鹿喂干草和苹果。
Many reindeer migrate across the tundra in search of food.
许多驯鹿穿越冻原迁徙以寻找食物。
reindeer 是可数名词，单数形式前用 a/an。
A reindeer was standing by the road.
一只驯鹿站在路边。
不加冠词的复数形式表示泛指这一类动物。
Reindeers live in cold northern regions.
驯鹿生活在寒冷的北方地区。
the 加复数特指说话双方都知道的某些驯鹿。
The reindeers pulled the sled across the snow.
那些驯鹿拉着雪橇穿过雪地。
herd of 表示“一群”，常用于大型食草动物。
A herd of reindeers crossed the valley.
一群驯鹿穿过了山谷。
Not this
There is many reindeer in the forest.
Use this
There are many reindeer in the forest.
reindeer 的单复数同形，many reindeer 表示多只驯鹿，谓语动词应用 are 与复数主语一致；汉语没有主谓一致的变化，因此容易误用 is。
Not this
A reindeer have long antlers.
Use this
A reindeer has long antlers.
a reindeer 是单数主语，谓语动词要用 has；have 用于复数主语或 I/you/we/they。汉语没有第三人称单数变化，因此容易漏掉 -s。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
驯鹿群
A large reindeer herd moved across the snowy plain.
一大群驯鹿穿越雪原。
驯鹿角
Both male and female reindeer grow antlers every year.
雄性和雌性驯鹿每年都会长角。
圣诞老人的驯鹿
Santa's reindeer fly through the night sky on Christmas Eve.
圣诞老人的驯鹿在平安夜飞过夜空。
驯鹿苔藓
Reindeer moss is a lichen that often grows in northern forests.
驯鹿苔藓是一种常生长在北方森林中的地衣。
（比喻）排挤他人的活动或圈子；把人冷落在一旁的集体活动
When the team went out for pizza without telling the new intern, she joked that she wasn't invited to the reindeer games.
当团队没告诉新实习生就去吃披萨时，她开玩笑说自己没有被邀请参加他们的“驯鹿游戏”。
红鼻子驯鹿鲁道夫有一个非常闪亮的鼻子。
This line is from the popular Christmas song about Rudolph, a reindeer whose nose glows red.
这句歌词出自那首广受欢迎的圣诞歌曲，讲的是鼻子发出红光的驯鹿鲁道夫。
驯鹿比人类好。斯文，你不觉得吗？
Kristoff sings this line to his reindeer Sven in the movie Frozen.
克里斯托夫在电影《冰雪奇缘》中对他的驯鹿斯文唱了这句歌词。
Use reindeer naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象驯鹿拉圣诞雪橇，缰绳（rein）就系在鹿（deer）身上：reindeer = rein + deer。
语域：neutral 常见场景：动物科普、北极地区旅行、圣诞节日文化 reindeer 通常指驯鹿，是一个中性的常用词，多用于动物、生态或圣诞相关的日常和科普语境；正式写作中也可使用。
reindeers
Dictionary facts from ECDICT, WIKTIONARY.