1. The army launched a surprise attack on the enemy's stronghold. 军队对敌人的据点发起了突袭。
2. The vicious dog tried to attack the mailman, but he was able to defend himself. 那只凶恶的狗想要攻击邮递员，但他成功保护了自己。
3. The company experienced a cyber attack that compromised their sensitive data. 公司遭遇了一场网络攻击，泄露了他们的敏感数据。
4. The politician used a smear campaign to attack his opponent's credibility. 这位政客利用抹黑运动攻击对手的信誉。
5. The doctor prescribed medication to help prevent future heart attacks. 医生开了药方以预防未来的心脏病发作。
6. The protesters were met with a violent police attack during the demonstration. 抗议者在示威活动中遭到了警方的暴力袭击。