ride a hobbyhorse
指孩子跨坐在带摇杆的木马玩具上，假装骑马；也可说 on a hobbyhorse。
The little boy rode his hobbyhorse across the living room carpet.
小男孩骑着木马穿过客厅的地毯。
摇木马；玩具木马
老话题；反复谈论的话题；儿童玩具,装有摇杆的仿制马；孩子跨坐其上假装骑马；反复谈论的话题；摇动木马；竹马
a toy horse for children, mounted on rockers, that a child sits on and pretends to ride
儿童玩具,装有摇杆的仿制马；孩子跨坐其上假装骑马
a child's plaything consisting of an imitation horse mounted on rockers; the child straddles it and pretends to ride
反复谈论的话题
a topic to which one constantly reverts
Every time we discuss the budget, he brings up his hobbyhorse about cutting costs.
每次我们讨论预算时，他都会提起他关于削减成本的老生常谈。
用法提示：这里 hobbyhorse 作为名词，指某人反复谈论的话题或观点。
My uncle's hobbyhorse is the importance of eating organic food.
我叔叔的老生常谈是吃有机食品的重要性。
用法提示：hobbyhorse 指一再提起的话题。
The politician's hobbyhorse about tax reform has become tiresome.
这位政客关于税制改革的老调重弹已经让人厌烦。
用法提示：hobbyhorse 作为名词，表示反复讲的话题。
指孩子跨坐在带摇杆的木马玩具上，假装骑马；也可说 on a hobbyhorse。
The little boy rode his hobbyhorse across the living room carpet.
小男孩骑着木马穿过客厅的地毯。
比喻义，指某人又开始反复谈论自己念念不忘的话题，常与 get on 连用。
Once she's on her hobbyhorse about grammar, no one can get a word in.
一旦她开始念叨语法这个老话题，谁也别想插上话。
用于劝人停止反复强调某个话题，语气略带不耐烦。
It's time to get off your hobbyhorse and listen to other people's views.
该放下你那个老话题了，听听别人的看法。
grammar · medium
易错句子She bought hobbyhorse for her son's birthday.
正确表达She bought a hobbyhorse for her son's birthday.
hobbyhorse 是可数名词，单数形式作宾语时前面必须有冠词或其他限定词；汉语名词没有冠词，学习者容易漏掉 a/an。
grammar · medium
易错句子The toy shop had three hobbyhorse in the window.
正确表达The toy shop had three hobbyhorses in the window.
英语可数名词与数词连用时必须用复数形式，hobbyhorse 的复数是 hobbyhorses；汉语名词不随数词变化，学习者常保留单数。
grammar · medium
易错句子Taking photos is my favorite hobbyhorse.
正确表达Taking photos is my favorite hobby.
表示“业余爱好”的词是 hobby，不是 hobbyhorse；hobbyhorse 指玩具木马或反复谈论的话题，词义不同，不能替换。
hobby 指业余爱好，是日常高频词；hobbyhorse 指玩具木马，也指一个人翻来覆去总谈的老话题。两词形近音近，容易顺手写混，但 hobby 不能指玩具，hobbyhorse 也不能泛指兴趣爱好。
rocking horse 是英语中最常用的说法，专指这种儿童玩具；hobbyhorse 同样可指摇木马，但偏旧式，且另有两个常用义：反复谈论的老话题、莫里斯舞中用的道具马。只谈玩具时用 rocking horse 更自然，谈“老话题”时只能用 hobbyhorse。
pet peeve 指令人烦躁的小事，带明显不满；hobbyhorse 的第二义“反复谈论的话题”只是某人老挂在嘴边的题目，未必招人烦。抱怨某事烦人用 pet peeve，说某人三句不离某话题才用 hobbyhorse。
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