Undiscoverable
a. 無法發現(或發覺)的, 不能公諸于世的
??? 情景例句
If you quit smoking now, you'll feel better in no time.
如果你現在戒煙的話，你很快就會感覺好多了。
If it doesn't rain tomorrow,I think I'll go shopping.
如果明天不下雨，我將去購物。
Is there anything else I should do?
我還有別的事要做嗎？