suddenly adv. 突然地；忽然；

例句：

The sky suddenly went dark and it started to rain.

天空骤然转暗，随即下起雨来。

Suddenly she felt old and out of date.

她猛然觉得自己老了，跟不上时代了。

扩展资料

Then, for no apparent reason, the train suddenly stopped.

接着，不知什么原因，火车突然停了下来。

The problem was suddenly thrown into sharp focus.

这个问题突然引起人们的密切关注了。

I suddenly realized what I had to do.

我突然明白我该怎么做了。

Suddenly the boat tilted to one side.

小船突然倾向一侧。