Secretness
n. 秘密；秘诀；机密 (secret的变形)
🗣️ 情景例句
Sure, I can.
当然， 我可以。
Change the subject.
说点别的吧！
But of course, he can learn by himself. He has a book and a dictionary.
但当然，他也可以自学。他有书和词典。