Undiscoverable
a. 无法发现(或发觉)的, 不能公诸于世的
🗣️ 情景例句
for reading to the kids in the hospital.
为住院的孩子朗读。
He that knows not how to hold his tongue knows not how to talk.
不知缄口的不善言。
I'd like to give you one of our new catalogs.
我们有新目录想给你