But the rest of his words were drowned in a sudden outbreak of rapping on the door.

但他的话被一阵骤然的敲门声淹没了。

The reason for the sudden outbreak, you're wondering?

突然爆发的原因，你想知道吗？

In his last memorandum Raeder bemoaned the  sudden outbreak of war which had prevented

雷德尔在他的最后一份备忘录中对突然爆发的战争表示哀叹，战争阻止了他的发展。

A traveler has no way of knowing what lies ahead before departure, be it a perfect holiday or one interrupted by a sudden outbreak.

旅行者在出发前无法知道前方会发生什么，是完美的假期，还是会被突发疫情打断。

Her Mama let her go and went to take off her apron. From the dining-room there came the sound of the dinner bell and a sudden glad outbreak of talking.

她妈妈放开她，去帮她脱围裙。饭厅里传来开饭铃的声音，突然间爆发出愉快的谈话声。