1) Suddenly the bell started to ring.
突然铃响了起来。
2) She broke into a laugh.
她突然笑起来了。
3) to break into song
突然唱了起来
4) suddenly, there were gunshots.
突然，枪响了。
5) burst out laughing
突然笑起来
补充资料：突然
1.忽然;猝然。 2.耸立貌。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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