jam

Compared meaning: to pack or squeeze something tightly into a place (verb).

比较义项：紧紧地把东西装入或塞进（某处）（动词）。

• pack

  Pack means to put things into a container in an organized, purposeful way so everything fits; it is neutral in tone and commonly used for bags, boxes or suitcases before a trip.

  pack（打包）指有条理、有目的地把东西装入容器（如包、箱子）以便装得下，语气中性，常用于出行前收拾行李。

  She helped her brother pack his bag for camp.

  她帮弟弟把行李打包好去参加夏令营。

• jam 本词

  Jam emphasizes forcing or squeezing something into a space that is too small or already full, often with effort and a sense of overcrowding; it is more informal than pack.

  jam（塞进，挤进）强调用力把东西挤进过小或已经很满的空间，常带有费力、拥挤的意味，语气比 pack 更口语化。

  He jammed his clothes into the already full suitcase.

  他把衣服硬塞进已经装满的行李箱里。

Pack and jam both mean putting things tightly into a place. Pack means doing this in an organized way so everything fits, often for bags. Jam means forcing something into a space that is too small or full; it is more informal than pack.

这两个词都表示把东西紧紧地装进某个地方，但语气不同：pack 强调有条理、有目的地把东西装好使其装得下，语气中性；jam 强调用力挤压、硬塞进过满或过小的空间，语气更口语化，带有拥挤费力的意味。此处不比较 jam 作名词表示“果酱”、pack 作名词表示“一包”或“一群”的用法。