In informal British English, if a place is heaving, it is packed with people — so full the room almost seems to move. The club was heaving. The station is heaving at half past six.

In informal British English在英式口語裡，if a place is heaving如果一個地方很擠爆，it is packed with people就是擠滿了人——so full the room almost seems to move滿到整個房間好像都要動起來了。The club那家夜店 was heaving當時很擠爆。The station那個車站 is heaving at half past six六點半的時候很擠爆。

Americans rarely use it this way; they say packed, crowded, or jammed.

Americans美國人 rarely use it this way很少這樣用；they say他們會說 packed, crowded, or jammedpacked、crowded，或jammed。

The picture comes from heave: to rise and fall with effort, like your chest heaving when you are out of breath. A huge crowd makes a place look as if it is moving.

The picture comes from heave這個畫面來自heave這個字：to rise and fall with effort費力地一起一伏，like your chest heaving when you are out of breath就像你喘不過氣時胸口起伏的樣子。A huge crowd一大群人 makes a place look as if it is moving會讓一個地方看起來好像在動。

You will hear this in speech, night-out talk, and British newspapers; it is too casual for a careful essay.

You will hear this你會聽到這個用法 in speech, night-out talk, and British newspapers在口語、夜生活閒聊，還有英國報紙上；for a careful essay對正式的文章來說 it is too casual它太隨便了。

Though actually, heaving is also just the ordinary -ing form of heave (lifting something heavy, or a stomach heaving). The full-of-people sense is the extra, lively one.

Though actually不過其實，heaving is also just the ordinary -ing form of heaveheaving也可以只是heave普通的-ing形式 (lifting something heavy, or a stomach heaving)（搬重物，或胃在翻攪）。The full-of-people sense擠滿人的這個意思 is the extra, lively one是額外、生動的用法。