He hides and watches, and then suddenly appears.

他躲藏了起来，看了一会，然后突然出现了。

youdao

She opened the door to go out, and then suddenly thought of something and turned back rather slowly.

她打开门要出去，然后突然想起了什么，很慢地转回来。

youdao

She took a mouthful of food and then suddenly spat it out.

她吃了一口食物，突然又吐了出来。

《牛津词典》

and then Suddenly it came.

VOA: special.2010.01.09

Let's listen to John Kander sit on one pitch level and then suddenly raise the whole thing up.

我们听到约翰·肯德尔选择了一个音高,然后突然升高了

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And then suddenly you're living by yourself,

然后突然间你要自己生活了，

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And then suddenly we tell people to do things differently, and it doesn't work.

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It's like you were valedictorian and then suddenly you're going for a semester at sea.

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And then suddenly I am in Lahaina, the most energized and enervating town on Maui.

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