FAQs About the word closed book

闭卷

something that baffles understanding and cannot be explained

神秘,挑战,难题,谜题,头疼,问题,神秘化,难题,困惑,谜语

No antonyms found.

closed => 关闭, close-bodied => 紧身, close-barred => 封闭的, close-banded => 近距离的, close up => 特写,