bounce

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 本词

  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

  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。