未透露的

例句：

1. 1. The new movie was unveiled at the premiere.
   新电影在首映式上揭幕。
2. 2. The scientist unveiled the secret of the cure.
   科学家揭开了治愈的奥秘。
3. 3. The government unveiled a new policy to combat climate change.
   政府公布了一项新的政策来对抗气候变化。