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an exchanger of [A] for [B]
of [A] for [B] 结构说明兑换的两种货币。
She is an exchanger of dollars for euros.
她是一位把美元换成欧元的兑换商。
货币兑换商
exchangers — plural of exchanger
先理解核心含义，再看它在真实句子里的用法。
货币兑换商
a person whose business is to exchange the money of one country for that of another
She is an exchanger of dollars for euros.
她是一位把美元换成欧元的兑换商。
将一种东西与另一种交换的人或物。
A person or thing that exchanges one thing for another.
The exchanger at the airport gave me a good rate for my dollars.
机场的货币兑换商给我的美元兑换率不错。
Before traveling, I compared several local exchangers to find the lowest commission.
旅行前，我比较了几家当地货币兑换商，以找到手续费最低的一家。
You can ask the exchanger whether the rate includes any service fee.
你可以问货币兑换商，这个汇率是否包含任何服务费。
of [A] for [B] 结构说明兑换的两种货币。
She is an exchanger of dollars for euros.
她是一位把美元换成欧元的兑换商。
at [place] 表示兑换商所在的地点。
The exchanger at the airport gave me a good rate.
机场的兑换商给了我一个好汇率。
who 引导定语从句，修饰 exchangers。
Exchangers who work at the airport are usually busy.
在机场工作的兑换商通常很忙。
所有格 ’s 表示兑换商的物品或业务。
The exchanger's commission is surprisingly low.
这位兑换商的佣金低得惊人。
Not this
He works as a money exchange.
Use this
He works as a money exchanger.
exchange 作名词时指兑换的行为或兑换处，不指人；表示“从事货币兑换的人”要用 exchanger。这里应使用加 -er 构成的人称名词。
Not this
Can you exchanger this money?
Use this
Can you exchange this money?
exchanger 是名词，不能作谓语动词；表达“兑换”这个动作要用动词 exchange。情态动词 can 后应接动词原形 exchange。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
热交换器
The heat exchanger in the boiler prevents overheating.
锅炉中的热交换器防止过热。
离子交换器
This filter uses an ion exchanger to remove heavy metals.
这个过滤器使用离子交换器去除重金属。
货币兑换商
The currency exchanger near the bank gave me a fair rate.
银行附近的货币兑换商给了我一个公道的汇率。
Use exchangers naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 exchange（交换）加上表示人的 -er，想象柜台里帮你换外币的那个人，就是 exchanger。
语域：formal 常见场景：foreign exchange、banking、formal documents 作“货币兑换商”讲时，通常用于正式或专业语境，多出现在金融、商务或法律文书中；日常口语中较少单独使用 exchanger，更常见的说法是 money changer 或 currency exchange。
作'兑换商'义指人，作'交换器'义指设备或程序；复数直接加 -s。
Dictionary facts from ECDICT, WIKTIONARY.