change

Compared meaning: to become different (verb).

比较义项：变得不同、发生改变（动词）。

• change 本词

  The most common and general word; simply means something becomes different, without indicating whether the change is partial or complete.

  最常用、最通用的词，只是表示某事物变得不同，并不说明这种改变是部分的还是彻底的。

  She decided to change her job after five years there.

  她在那里工作五年后，决定换一份工作。

• vary

  Emphasizes that something differs from one case to another or changes according to a condition, rather than describing a single act of change.

  强调事物之间存在差异，或随某种条件而变化，而不是描述一次具体的改变行为。

  Prices vary depending on the size of the room.

  价格会根据房间的大小而有所不同。

• alter

  Suggests changing certain details or aspects while the basic nature of something stays the same; more formal, often used with plans, documents, or appearance.

  表示只改变某些细节或方面，而整体性质保持不变；语气较正式，常用于计划、文件或外观等方面。

  We had to alter our plans because of the rain.

  由于下雨，我们不得不调整计划。

Change, vary, and alter all mean to become different. Change is the most common word, meaning something becomes different. Vary stresses that something differs from case to case, or changes with a condition. Alter is more formal, meaning certain details change, not the basic nature.

change、vary、alter 在“变得不同”这个意义上相近，但用法有别：change 最常用、最通用，只说明结果不同，不分部分还是彻底；vary 强调事物之间存在差异，或随某种条件而变化，常与 depending on 连用；alter 语气较正式，通常指只改变某些细节或方面，整体性质保持不变。这里不比较 change 表示“兑换；更换（物品）”等其他意义。

Compared meaning: to trade one thing for another (verb).

比较义项：兑换／交换一物换取另一物（动词）。

• change 本词

  Typically describes converting one form of money or item directly into another, often with "into" or "for"; usually one-directional, not necessarily reciprocal between two people.

  通常指把一种货币或物品直接换成另一种，常与“into”或“for”搭配；一般是单方面的转换，不一定是双方之间的互换。

  The machine will change your coins into bills.

  这台机器会把你的硬币兑换成纸币。

• exchange

  Emphasizes a mutual give-and-take between two people or parties, often followed by "with"; used for reciprocal actions like gifts, contacts, or ideas, as well as formal currency exchange.

  强调双方之间的互相给予和接收，常与“with”搭配；用于礼物、联系方式、意见等的互换，也可指正式的货币兑换。

  They exchanged phone numbers with each other after the meeting.

  会议结束后，他们互相交换了电话号码。

Change and exchange both mean to trade one thing for another. Change usually means converting one form of money or item into another, often with 'into' or 'for', not necessarily mutual. Exchange means a mutual give-and-take between two people, often with 'with', for gifts.

change 与 exchange 在“兑换／交换”这一义项上意思相近，但 change 更强调把一种东西换成另一种，语气较随意，常见于货币或日常场景；exchange 更强调双方之间的互相给予和接收，语气较正式。这里不比较 change 的“改变、改换”（如 change one's mind）等其他义项，也不比较 exchange 的“交流意见”等其他义项。