on the offensive
准备攻击making an attack or ready to attack
They will do on the offensive.他们正准备攻击。

take the offensive
进攻attack first
If all else fails,I will take the offensive.如果其他方法不行,我将采取攻势。

They mouthed a trade offensive.他们发动了一场贸易攻势。

［派生词］ offensively  adv.进攻地；冒犯地
［同义词］ adj.  attacking, distasteful n.  assault, attack
［反义词］ adj.  attractive, defensive

用作定语
▲～+n.
She said some offensive remarks.她说了一些令人不快的话。
He took up offensive words.他发出攻击性的言论。
用作宾语补足语
▲S+V+O+～
I found him very offensive.我觉得他非常讨厌。