defend against 

英汉解释

防卫，保卫；抵抗

参考例句

1. Our duty is to defend the country against its enemies.
我们的职责是保卫国家不受敌人侵犯。
2. Love is the greatest weapon, SO none can defend against its force.
爱情是最伟大的武器，谁也无法抵御它的威力。
3. When the foul happens, no defender can be ahead of the ball where he could defend against the easy basket.
当犯规发生时，没有任何一名防守球员处于球的前面得以阻止容易得上篮。

网络释义

defend against
防卫; 防卫以免于; 抵抗; 防卫以免;
defend oneself against
对...为自己辩护; 对…为自己辩护;
defend guard against prevent
预防;
defend sb against sth
使某人不受~~~的侵害;
defend sb against injustice
打抱不平;