1
a rhino
We saw a rhino near the river.
我们在河边看到一头犀牛。
犀牛
先理解核心含义，再看它在真实句子里的用法。
犀牛
a large, powerful herbivorous animal with very thick skin and one or two horns on its snout, found in Africa and Southeast Asia
We saw a rhino near the river.
我们在河边看到一头犀牛。
钱；现金
n massive powerful herbivorous odd-toed ungulate of southeast Asia and Africa having very thick skin and one or two horns on the snout
At the zoo, we saw a rhino eating grass near the pond.
在动物园，我们看到一头犀牛在池塘边吃草。
The rhino has thick skin and a large horn on its nose.
犀牛有厚厚的皮肤和鼻子上的一只大角。
Rhinos usually live in Africa and Asia, and they can run surprisingly fast.
犀牛通常生活在非洲和亚洲，它们跑起来惊人地快。
We saw a rhino near the river.
我们在河边看到一头犀牛。
Rhinos live in Africa and Asia.
犀牛生活在非洲和亚洲。
作定语时使用单数形式，如 rhino horn（犀牛角）。
The rhino population is decreasing.
犀牛的数量正在减少。
Not this
There are two rhino in the zoo.
Use this
There are two rhinos in the zoo.
rhino 是可数名词，复数形式是 rhinos。中文没有单复数变化，但英语中可数名词表示复数时必须加 -s，不能用 rhino 直接表示复数。
Not this
Rhino is a huge animal.
Use this
The rhino is a huge animal.
rhino 是可数名词，单数形式不能单独使用，需要有冠词。泛指整个物种时用 the rhino（the + 单数名词）或复数形式 rhinos。这里加上 the 表示“犀牛这一类动物”。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
白犀牛
White rhinos are the largest of the five rhino species.
白犀牛是五种犀牛中体型最大的。
黑犀牛
Black rhinos are smaller and more aggressive than white rhinos.
黑犀牛比白犀牛体型更小，性情也更具攻击性。
犀牛角
The rhino horn is made of keratin, like human hair and nails.
犀牛角由角蛋白构成，就像人的头发和指甲一样。
犀牛偷猎
Rhino poaching has decreased in recent years, but the threat remains.
近年来犀牛偷猎有所减少，但威胁依然存在。
犀牛保护
Many organisations are working on rhino conservation across Africa and Asia.
许多组织正在非洲和亚洲开展犀牛保护工作。
犀牛种群
The rhino population in this park has grown steadily.
这个公园里的犀牛种群稳步增长。
Use rhino naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
rhino=犀牛：r像翘起的犀牛角，hino像“hi no”，提醒你别靠近它。
语域：informal 常见场景：informal conversation、wildlife documentaries、news headlines rhino 是 rhinoceros 的常见口语简称，多用于日常对话、新闻报道或非正式写作中；在正式学术或正式文体里通常用完整的 rhinoceros。
表示“犀牛”时可数，复数形式为 rhinos；表示“钱/现金”时不可数，无复数形式。
Dictionary facts from ECDICT, WIKTIONARY.