突然地：表示某事发生得很突然，没有预兆。
happening unexpectedly
同义词： suddenly / all of a sudden
... in a way 有几分，在某种程度上 of a sudden 突然，出乎意料 in a hurry 匆忙，急于 ...
... occur to me 被我记起，被我想起。 of a sudden 瞬息之间，突然。 of course 势必，当然。 ...
All of a sudden she didn't look sleepy any more.
突然她看上去不再困倦了。
All of a sudden, right after the summer, Mother gets married.
突然之间，夏天刚过完母亲就结婚了。
"So why did he get interested all of a sudden?"— "Search me."
“那么他为什么突然感兴趣了呢？”—“我哪知道。”
Then all of a sudden Smiley's dog would grab that other dog by his back leg and hang on till the men said it was over.
VOA : special.2009.08.29
Almost more than anything else for me, it's fully being aware of the moment and it seems so rich all of a sudden.
任何一切对我而言，都是要全心留意当下,一瞬间一切好像丰盈起来。
人性课程节选 : 普林斯顿公开课
Gallium arsenide switches ten times faster than silicon All of a sudden,I've got a clock speed ten times faster with no change in design.
砷化镓启动的速度是硅的10倍,突然，我得到了10倍快的时钟速度,但是设计没有发生任何改变。
固态化学导论课程节选 : 麻省理工公开课
"What we showed is that for students who are highly test-anxious, who'd done our writing intervention, all of a sudden there was no relationship between test anxiety and performance.
VOA : special.2011.01.20
"This is an amazing feeling. You kind of dream about it for years and all of a sudden it's happening.
VOA : standard.2010.02.28
And all of a sudden, it came so crystal clear to me who this guy was.
And all of a sudden you get six or seven potential clients versus none.
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People have a change of heart on spending all of a sudden when it becomes personal.
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