recoil

Compared meaning: to spring back quickly after hitting something (verb).

比较义项：受力或接触后迅速弹起、弹回（动词）。

• bounce

  Describes an elastic object, especially a ball, springing up or away from a surface, often repeatedly; neutral and physical, and can suggest playful, continuous motion.

  指有弹性的物体（尤指球）接触表面后弹起或弹开，常常是连续的动作；语气中性，偏向具体的物理动作，也可表示顽皮、持续的动态。

  The ball bounced happily across the playground as the children chased it.

  孩子们追着球跑时，球在操场上欢快地弹跳着。

• rebound

  Describes a single spring-back after hitting something or after a decline, and is often used figuratively for prices, markets, or morale recovering.

  指撞击之后或下跌之后一次性地弹回，常用于比喻价格、市场或士气在下跌后回升。

  Her confidence rebounded once she got positive feedback.

  得到积极的反馈后，她的信心又恢复了。

• recoil 本词

  Describes a sudden, sharp jerk backward, often an instinctive reaction to shock, fear, or disgust, or the force of a gun firing; more forceful and abrupt than bounce or rebound.

  指突然猛烈地向后一缩或弹回，常表示因受到惊吓、厌恶而产生的本能反应，也可指枪械的后坐力；语气比bounce和rebound都更强烈、更突然。

  He recoiled in disgust when he saw the mold on the bread.

  他看到面包上的霉菌时，厌恶地猛然缩手。

Bounce, rebound, and recoil all mean to spring back after contact. Bounce is neutral, used for a ball springing up repeatedly. Rebound means one spring-back after a hit or decline, often for prices or morale. Recoil means a sudden jerk, a reaction to shock.

这三个词都表示“受力后迅速弹回原处”，但语气和典型用法不同：bounce最中性具体，多用于球类等物体的弹跳，可以连续发生；rebound强调撞击或下跌之后的一次性回升，常用于经济、市场、士气等比喻场景；recoil语气最强烈突然，常指人因惊吓、厌恶而本能地向后一缩，也可指枪械的后坐力。这里不比较bounce常与“back”连用表示“（精神）重新振作”的用法，也不比较recoil用于“recoil from an idea”（对某种想法感到反感、退避）等更抽象的引申义。

Compared meaning: the backward force of a fired gun (noun).

比较义项：（枪炮等）后坐力、反冲力（名词）。

• kick

  Kick is the informal, felt word for a gun's backward jolt, natural in casual speech about the physical impact a shooter feels.

  kick是口语化、强调切身感受的词，常用于随意谈论射手感受到的冲击力。

  That old shotgun's got a wicked kick, so brace yourself before firing.

  那把旧猎枪的后坐力很猛，开枪前要做好准备。

• recoil 本词

  Recoil is the precise, technical term used in ballistics to name the backward force itself, fitting formal or scientific description.

  recoil是弹道学中用来指称后坐力本身的精确、专业术语，适合正式或科学性的描述。

  Recoil is calculated from the bullet's weight and the rifle's muzzle velocity.

  后坐力是根据子弹重量和步枪枪口速度计算得出的。

Kick and recoil both name a gun's backward force when fired. Kick is the informal, felt word, natural in casual speech about the physical impact a shooter feels. Recoil is the precise, technical term used in ballistics, fitting formal or scientific description.

两者都指枪械等突然释放力量时产生的后坐力，但kick更口语化，强调使用者切身感受到的冲击；recoil更正式、专业，常用于描述枪械后坐的物理过程或弹道学计算。这里不比较kick表示「踢」的动作义。