a bolt from the blue
US /ə boʊlt frəm ðə bluː/
UK /ə boʊlt frəm ðə bluː/

成语
1.
晴天霹雳, 意想不到的事件
a sudden, unexpected event that is usually unpleasant
示例:
•
The news of his resignation came as a bolt from the blue.
他辞职的消息犹如晴天霹雳。
•
Her sudden illness was a bolt from the blue for the whole family.
她突然生病对全家人来说是晴天霹雳。
在 Lingoland 学习这个单词