unannounced

英 [ˌʌnəˈnaʊnst]

美 [ˌʌnəˈnaʊnst]

adj.  未通知的; 未预告的; 未打招呼的

Collins.1 / BNC.20162 / COCA.15841

牛津词典

adj.

• 未通知的；未预告的；未打招呼的
  happening without anyone being told or warned in advance
  1. She just turned up unannounced on my doorstep.
     她未打招呼就来到我家门口了。
  2. an unannounced increase in bus fares
     汽车票价未经公告的上涨

柯林斯词典

• ADJ 未事先通知的；未提前说明的；未打招呼的
  If someone arrives or does somethingunannounced, they do it unexpectedly and without anyone having being told about it beforehand.
  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。
  2. 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。

双语例句

• There is no mid-term examination, but unannounced quizzes on the reading assignments and films are always possible.
  本课程不安排期中考试，但通常会不定时地安排一些关于阅读作业或影片的小好。
• Did you hear this? Hillary Clinton busted her elbow. Apparently, she slipped and hit the floor when she went home to her husband early, unannounced.
  听说了吗？希拉里伤了胳膊，他没告诉克林顿就提前回家，结果滑到摔倒了地板上。
• 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。
• Also, the Department of Agriculture will now make unannounced visits.
  同时，农业部也会在事先未通知的情况下突然造访动物园。
• The unannounced design institutes cannot be engaged in design for relevant water project construction.
  未经公告的设计单位不得从事相应等级的水利工程设计。
• His visit to France was unannounced.
  他访问法国是闷不吭声的。
• 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。
• We called on my parents-in-law completely unannounced and they made us as welcome as the flowers in May.
  我们根本没有通知就去拜访我的岳父母，结果他们也非常欢迎我们去。
• She appeared unannounced and took control of the meeting.
  她突然出现，控制了会议。
• He arrived unannounced. advance drawing change notice
  他未事先通知而来到.图纸更改的预先通知