密地

例句：

1. 1. The government haskept the details of the new policy undera tight secrecy.
   政府对新政策的详情保持了严格的保密。
2. 2. She was sosecretive about her past that no oneknew who she really was.
   她对自己的过去守口如瓶，没有人知道她的真实身份。
3. 3.The company's top executives wereall secretive about their plans for thefuture.
   公司的高级管理人员对他们的未来计划守口如瓶。