Definition
to unexpectedly turn around and launch an attack on someone or something
突然反擊；突然轉身並猛力攻擊
During the argument, he suddenly rounded on his opponent.
在爭論中，他突然轉身攻擊他的對手。
When she feels bullied, she quickly rounds on her aggressor.
當她感到被欺負時，她迅速反擊欺負她的人。
The dog suddenly rounded on the child and barked ferociously.
那隻狗突然轉身對著那個孩子兇猛地吠叫。
to retaliate against someone who has criticized you
反擊批評
As soon as I gave him my suggestion, he rounded on me with criticism.
我一給他建議，他就立刻對我進行批評反擊。
She rounded on her colleague fiercely in response to the criticism.
她對同事的批評進行了激烈的反擊。
If you attack my work, I will round on you without hesitation.
如果你攻擊我的工作，我會毫不猶豫地反擊你。