In fact, if there's one positive thing that can come out of the Ebola epidemic, it's that it can serve as an early warning, a wake-up call, to get ready.
事实上，要说这场埃博拉病毒的疫情 带来了什么正面影响的话， 那就是提早响起了警报， 让我们觉醒并做好准备。