thunderbolt
n
1 flash of lightning with a crash of thunder 雷电; 霹雳.
2 (fig 比喻) startling or terrible event or statement 突然的或可怕的事情或言语
The unexpected defeat came as a thunderbolt. 这意外的失败犹如晴天霹雳.
He unleashed a thunderbolt by announcinghis resignation. 他宣布辞职好似晴天炸雷一般.