extremely frightened

基本解释

Now millions of users are frequently harassed by the viruses and some are extremely frightened.
目前世界上上亿用户受着计算机病毒的困扰，有些还陷入极度的恐慌之中。
Some people may also become extremely frightened and think, 'If I stop breathing altogether surely I will die'.
许多人也会极度恐慌地认为：“如果我完全停止呼吸，我当然会死掉”。
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During the earthquake, I was extremely frightened. I think the fact that we were on a bridge made the shaking that much worse. But everyone remained calm.
地震时我真是被吓坏了。我们当时在过桥所以晃动的更加猛烈。但是所有人还是保持冷静。

Exhausted, confused and extremely frightened, Owen immediately ran to the safety of a giant tortoise when we released him in Haller Park.
NPR: A Hippo and Tortoise Tale