Suddenly, I hear it: the howl of wolves.

突然，我听到了狼的嚎叫。

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Suddenly we hear a cry: "Help!"

突然，我们听到一声大叫：“救命！”

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Jack and Ben are good friends. One day, they explore a forest together. When they go deep into the forest, suddenly they hear a sound.

杰克和本是一对好朋友。一天，他俩结伴去森林探险。当他们深入森林时，突然听到一个声音。

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Then,suddenly you hear the movement of leaves nearby.

VOA: special.2009.08.19

Suddenly the vision begins to transform and he begins to hear the voice of Paul, "Thrice was I beaten, twice was I imprisoned, in shipwrecks often, in peril often."

突然之间，视觉的幻想开始改变,他听到了保罗的声音，“我被人打过三回，囚禁两次，经常受苦受难“

普林斯顿公开课 - 人性课程节选

Do you ever learn a new word and suddenly hear it constantly?

FORBES: The momentum behind the conversation.

It was a surprise to suddenly hear from my gold guru that he had decided to go back in and replace the 50% of his holdings he sold some two years ago.

FORBES: My Gold Guru Doubles Up On His Gold Position

People too young to remember Mr. Harvey's glory days stopped what they were doing and leaned toward the television set, suddenly needing to hear every word.

CNN: Super Bowl ad revives iconic American voice