unannounced是什么意思

实用例句

1. He had just arrived unannounced from South America.

他刚刚从南美来到这里，事先没有打招呼。

来自柯林斯例句

2. She just turned up unannounced on my doorstep.

她未打招呼就来到我家门口了。

来自《权威词典》

3. Having arrived unannounced for supper, we had to take potluck.

由于没有提前通知我们要来吃晚饭, 我们只能吃些家常便饭.

来自《简明英汉词典》

4. My first night in Saigon I paid an unannounced visit to my father's cousins.

到西贡的第一个晚上，我给父亲的堂兄堂弟们来了个突然袭击。

来自柯林斯例句

5. The principal keeps students and teachers on their toes with unannounced visits to the classroom.

校长经常事先不通知地去听课,使得学生、教师都不敢怠慢.

来自《现代汉英综合大词典》