他摔下来时，惊恐的邻居们赶忙冲过去救他。Horrified neighbours rushed to his aid as he fell.喊叫声变成了惊恐的尖叫声。The shouts changed to screams of terror.使他惊恐的是, 公共汽车着了火.To his horror, the bus caught fire....

“惊恐的”的英语可以翻译为：horror-struck ...