1.The sirens warned the people of an impending attack by the enemy.
警报器警告人民敌人的攻击已经逼近了。
2.Aware of the impending attack, the Speaker struck back by declaring that he would fight to the end.
这位议长意识到即将到来的攻击，声称要战斗到底。
3.Since it is cloaked it is impossible to predict an impending attack without the use of a detector.
因为是隐形单位，想要不用反隐设施而预测他带来的攻势是不可能的。
4.What if Scott's information about the impending attack is accurate?
如果斯科特进攻迫近的消息是准确的怎么办？