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》

All the time you are in doubt about the cause of your illness, you are fighting against an invisible enemy.

一直以来你都在怀疑自己的病因，你是在和一个无形的敌人斗争。

《柯林斯英汉双解大词典》

She ran against an old schoolmate in the park last week.

她上星期在公园中和一个老同学不期而遇。

youdao

It is sabotage. It means to damage or destroy as an act of subversion against an organization or nation.

VOA: special.2010.04.18

Of course in the reversible case, you're always pushing against an external pressure, which is essentially equal to the internal pressure.

当然在可逆的情况下，外压力，总是，等于内部压力。

麻省理工公开课 - 热力学与动力学课程节选

And if we're stuck with it,then of course it's not an objection against any one of the theories that uses it.

而且如果我们卡在了这里,任何一个理论适用这规则都无妨。

耶鲁公开课 - 死亡课程节选

United dominated the first half without ever hitting top gear against an efficient Villarreal side.

BBC: Man Utd 0-0 Villarreal

Guille Franco sent a flick against an upright on the hour as Villarreal provided stubborn resistance.

BBC: Man Utd 0-0 Villarreal

The trees, however, were bare, creating dark, bleak silhouettes against an anaemic winter sky.

BBC: The quest to see China��s extraordinary frozen fog