Cách sử dụng
The phrase "be none the wiser" means that someone doesn't know anything or isn't any more knowledgeable about a situation or information than they were before. It's often used after someone has attempted to explain something, but the listener still doesn't understand. For example, if someone tries to explain how to play a complicated board game to a friend, but the friend still doesn't understand, they might say "I'm afraid I'm still none the wiser."