This is the 4113th most frequent Chinese word.
反彈
"反彈" means "rebound" or "to bounce back."
Here, "反彈" means "rebound" referring to the recovery in financial terms.
股市今天的指數有所反彈。
The stock market index rebounded today.
In this sentence, "反彈" describes an emotional reaction or backlash.
他受到批評後情緒強烈反彈。
He had an intense emotional rebound after being criticized.
The word "反彈" is used here to describe the physical phenomenon of sound reflecting.