At the briefing before we took off to bomb the Germans, our commander told us it would probably be a tough flight. But it turned out to be a piece of cake: no anti-aircraft fire and no enemy fighters.

这句话的意思是：“在我们起飞去轰炸德国人之前举行的情况介绍会上，我们的司令员告诉我们这次飞行任务可能很艰巨。但是，结果倒非常容易，既没有高射炮射击，也没有敌机来干扰。”