secret

n. 秘密、機密、秘訣、秘方

a. 秘密的、極機密的、隱蔽的、暗中的、神秘的、偏僻的

學術名詞

• 秘密：電機工程、電力工程
• 秘密的：電機工程、電力工程
• 機密：資訊

英文釋義

1. something that should remain hidden from others (especially information that is not to be passed on)
2. information known only to a special group
3. something that baffles understanding and cannot be explained
4. not open or public; kept private or not revealed