top-secret

基本解释

In 2005, the U.S. classified these chicken barns as part of the nation's 'critical infrastructure, ' giving them a kind of top-secret status.
2005年，美国把这些养鸡场列为国家“重要基础设施”的一部分，并赋予了它们相当于最高机密的地位。
In Washington and the surrounding area, 33 building complexes for top-secret intelligence work are under construction or have been built since September 2001.
在华盛顿以及周边地区，自2001年起，有33座负责最高机密的情报收集工作的大楼在建或者已经建成。
The title refers to a real place, a vast and luxurious urban-renewal project in Chengdu that is being built on the site of a former top-secret munitions factory complex.
电影的标题取自一个真实的地名，二十四城地处成都，本是一个大型且奢华的城市重建地产项目，它的前址是一个绝密的军需联合工厂。

He says the released documents do not include any top-secret reports or names of informants or information like troop movements.
They accidentally record a train wreck and, in the process, uncover a top-secret military project.

The documents she stole included top-secret information about IDF orders of battle, units, armaments and operational orders.
CENTERFORSECURITYPOLICY: The Haaretz Spy Scandal
In 1940 President Roosevelt's science adviser, Vannevar Bush, appointed Loomis to head the top-secret "Rad Lab" at MIT.
FORBES: The Alchemist

Top secret information or activity is intended to be kept completely secret, for example, in order to prevent a country's enemies from finding out about it.