Some examples of word usage: out of the blue
1. He called me out of the blue last night.
昨晚他突然打电话给我。
2. The email from my old friend came out of the blue.
我老朋友发来的邮件突然出现了。
3. The news of her promotion came out of the blue.
她升职的消息突然传来。
4. I ran into an old classmate out of the blue at the supermarket.
我在超市里突然碰到了一个老同学。
5. The job offer came out of the blue and I couldn't believe my luck.
工作机会突然出现,我简直不敢相信我的运气。
6. The storm hit our town out of the blue and caused a lot of damage.
暴风雨突然袭击了我们的小镇,造成了很多损失。