It is impossible to defend against an all-out attack.

防御全面进攻是不可能的。

《牛津词典》

There is also a castle in Europe with defenses set to defend against an attack from the inside out.

欧洲还有一处城堡其防御设施是用于防御来自地内的攻击。

youdao

Yet the grid remained and the rules remained: attack, defend, capture, sacrifice. Win at all costs.

然而，棋盘的格子和进攻，防守，捉子，弃子的规则保持不变，以任何代价取得胜利保持不变。

youdao

If South Carolina attacked, or planned to attack, then he could move his men into the fort that would be easiest to defend.

VOA: special.2009.07.23

But if the attacker was to attack through the hard pass, again not surprisingly, you do better if you defend the hard pass than the easy pass.

但如果入侵者选择崎岖之途,仍然是毫无疑问,选择防御崎岖之途要比平坦之途好

耶鲁公开课 - 博弈论课程节选

He stopped moving forward and prepared to defend against what seemed to be a strong Confederate attack.

VOA: special.2009.08.27

Lenovo itself has built a version of lust and fear into its overall strategy: attack and defend.

FORBES: Segmentating On Fear And Lust

"What I was saying very clearly and what I would make no apology about it was that if my home was coming under attack I would defend my home, " he said.

BBC: Union flag dispute: Alex Maskey stands by 'defend' comment

This is the industry making money from companies and governments who want to defend and attack digital threats like Operation Robin Hood.

FORBES: Anonymous Takes From The Rich, Gives To... The Cyber Security Industry?