packet

Compared meaning: something wrapped for mailing or selling (noun).

比较义项：包裹、邮寄或出售用的包装物（名词）。

• package

  The most general, neutral term for anything wrapped or boxed for shipping or sale; used in both American and British English for deliveries of any size, from a book to furniture.

  最通用、中性的说法，指任何被包装或装箱以便邮寄或出售的物品；美式和英式英语都用它指各种尺寸的包裹，从一本书到一件家具。

  The delivery driver dropped off a package containing my new headphones.

  送货员送来了一个包裹，里面装着我新买的耳机。

• packet 本词

  Suggests a small package, often holding a specific quantity of something like sugar, seeds, or crisps; common in British English for small consumer items, rarely for mail.

  指小包裹，通常装着特定数量的东西，如糖、种子或薯片；在英式英语中常用来指日常小件物品，很少用于邮寄。

  She tore open a small packet of sugar to sweeten her coffee.

  她撕开一小包糖为咖啡调味。

• parcel

  Emphasizes something sent by post or courier; a common British English word for a mailed package, less often used for small consumer goods like sugar.

  强调通过邮寄或快递寄送的物品；是英式英语中常用来指邮寄包裹的词，较少用于像糖这样的日常小件商品。

  She sent the birthday gift as a parcel through the post office.

  她把生日礼物作为包裹通过邮局寄送。

Package, packet and parcel mean something wrapped for mailing or selling. Package is the general word, used in American English for any size. Packet suggests a small package, like sugar, rarely for mail. Parcel means something sent by post, typical in British English.

这三个词都可以表示“包裹”，意思相近，但语域和典型搭配不同：package 最通用、中性，美式英语常用，可指任意大小的包裹；packet 强调“小包”，多指糖、种子等日常小件物品，很少用于邮寄；parcel 更常见于英式英语，通常指通过邮局或快递寄送的包裹。这里不比较 package 作“软件包”等比喻义。