1
a racehorse
racehorse 是可数名词，用 a/an 表示泛指或首次提及的某匹赛马。
A racehorse can run very fast.
赛马能跑得非常快。
赛马用的马；比赛用马
先理解核心含义，再看它在真实句子里的用法。
赛马用的马；比赛用马
a horse bred for racing
A racehorse can run very fast.
赛马能跑得非常快。
参加比赛的马
A horse that competes in races.
任何属于Congiopodus属某些物种的成员。
Any member of certain species of genus Congiopodus.
The trainer fed the racehorse before the morning workout.
驯马师在早间训练前给赛马喂食。
She has owned racehorses for many years and goes to the races every weekend.
她养赛马多年，每个周末都去看赛马。
A healthy racehorse needs careful training and a balanced diet.
一匹健康的赛马需要精心训练和均衡饮食。
racehorse 是可数名词，用 a/an 表示泛指或首次提及的某匹赛马。
A racehorse can run very fast.
赛马能跑得非常快。
用 the 表示说话双方都知道的那匹赛马。
The racehorse belongs to the trainer.
这匹赛马属于那位驯马师。
复数形式为 racehorses，直接加 -s，可与 many、several 等词连用。
The farm has many racehorses.
这个农场有许多赛马。
Not this
He bought racehorse for the competition.
Use this
He bought a racehorse for the competition.
racehorse 是可数名词，单数形式前需要冠词 a 或 the。中文没有冠词，容易漏掉。
Not this
That horse race is very fast.
Use this
That racehorse is very fast.
racehorse（赛马）和 horse race（赛马比赛）不是同一种事物：racehorse 指马，horse race 指比赛。
Not this
The trainer has three racehorse.
Use this
The trainer has three racehorses.
racehorse 的复数形式是 racehorses，在 three 等表示数量的词后必须用复数。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
赛马训练师
The racehorse trainer spends every morning at the track.
这位赛马训练师每天早上都在赛马场上。
赛马的主人
The racehorse owner congratulated the jockey.
这位赛马的主人向骑师表示祝贺。
赛马育种
Racehorse breeding demands patience and expertise.
赛马育种需要耐心和专业知识。
赛马马厩
She has worked at the racehorse stable for ten years.
她在这家赛马马厩工作了十年。
退役赛马
The retired racehorse lives on a peaceful farm.
这匹退役赛马住在一个宁静的农场里。
Use racehorse naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把race(赛跑)和horse(马)合成画面：一匹赛马正冲过终点线——racehorse就是赛马。
语域：neutral 常见场景：赛马运动、体育新闻、谈论马匹的场合 该词为中性表达，多用于赛马运动、体育新闻或一般性谈论马匹的场合，口语和书面语中都适用。
在这些词中，horse、course、source、force、endorse 在目标单词的读音下都与 -orse/-ourse/-orce 押韵，元音均为 /ɒ:/，后面是 /s/。注意拼写差异：orse、ourse、orce。worse 虽然拼写也是 -orse，但读音为 /wɜːs/，元音不同，不押韵。
Dictionary facts from ECDICT, WIKTIONARY.