1
rebound off sth
主语通常为有弹性的物体；off 后接被撞击的物体。
The squash ball rebounded off the front wall and landed near his feet.
壁球从前墙弹回，落在他脚边。
反弹
rebounds — plural of rebound
先理解核心含义，再看它在真实句子里的用法。
反弹
a movement back from an impact
The squash ball rebounded off the front wall and landed near his feet.
壁球从前墙弹回，落在他脚边。
物体碰撞后弹回。
The recoil of an object bouncing off another.
从冲击中反弹的运动
a movement back from an impact
恢复健康或良好状态；康复。
A return to health or well-being; a recovery.
对危机、挫折或失望的反应
a reaction to a crisis or setback or frustration
The rebound of the ball off the wall gave the player more time to react.
球从墙上反弹回来，给了球员更多反应时间。
AI contextual example
The housing market is finally showing a rebound after months of decline.
房地产市场在连续数月下滑后终于出现反弹。
AI contextual example
The company reported a rebound in profits for the third quarter.
公司报告第三季度利润出现反弹。
AI contextual example
he is still on the rebound from his wife's death
他还没有从妻子的去世中恢复过来。
WordNet
主语通常为有弹性的物体；off 后接被撞击的物体。
The squash ball rebounded off the front wall and landed near his feet.
壁球从前墙弹回，落在他脚边。
from 后接所脱离的不利状态；也常用于运动、市场等。
The economy rebounded from the recession quickly.
经济迅速从衰退中复苏。
on 后接行为者本人，表示恶果反噬；常用于负面语境。
His harsh words rebounded on him.
他刻薄的话语使他自食其果。
Not this
The ball rebounded back off the wall.
Use this
The ball rebounded off the wall.
rebound 本身已包含“回”的意思，再加 back 是语义重复；表示“从墙上弹回”时用 rebounded off the wall 即可。
Not this
The ball rebounded the wall.
Use this
The ball rebounded off the wall.
rebound 表示“弹回”时为不及物动词，不能直接接墙作宾语，需要介词 off 引出弹回的表面，因此要写 rebounded off the wall。
Not this
I will rebound the book to fix the loose pages.
Use this
I will rebind the book to fix the loose pages.
rebound 虽可作 rebind 的过去式/过去分词，但不是动词原形；表达“重新装订”时要用原形 rebind，而 rebound 作现在时动词时意为“弹回”。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
从……中恢复；从……回升
The housing market is rebounding from a long slump.
房地产市场正从长期低迷中复苏。
从……弹开；撞到……后弹回
The ball rebounded off the crossbar.
球击中横梁后弹了回来。
失恋后急于另寻新欢；处于失恋恢复期
He was on the rebound when he met his new girlfriend.
他遇见新女友时，正处于失恋后的感情空窗期。
（停药后症状加重的）反跳效应；反弹作用
The doctor warned her about the rebound effect of stopping the medicine suddenly.
医生提醒她，突然停药会产生反跳效应。
抢一个篮板球
He grabbed a rebound and scored an easy basket.
他抢到篮板，轻松上篮得分。
（价格、市场等）的急剧反弹
The market saw a sharp rebound after the interest rate cut.
降息后市场出现急剧反弹。
在失恋后的心理恢复期；刚失恋的
She married him on the rebound, before she had really gotten over her ex-boyfriend.
她在还没真正走出前男友阴影时就仓促嫁给了他，这是一种失恋后的冲动行为。
Use rebounds naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想 re（再次）+ bound（跳跃），球撞地后再次跳起，就是“反弹、弹回”。
语域：mixed 常见场景：体育报道、财经新闻、日常对话 该词多用于描述物体弹回或价格、数量等回升。体育和财经报道中比较常见，日常口语中也会用到；正式程度随场合变化。
以上单词均与 rebound 中的重读音节 /baʊnd/ 押韵。注意不要混淆 look-alike ‘rebind’ (/riːˈbaɪnd/)，其元音是 /aɪ/，不押韵。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.