closed book
英 [kləʊzd bʊk]
美 [kloʊzd bʊk]
完全不了解的人; 一无所知的事物; 谜
英英释义
noun
- something that baffles understanding and cannot be explained
- how it got out is a mystery
- it remains one of nature's secrets
双语例句
- Nuclear physics is a closed book to most of us.
我们大多数人对原子核物理学一窍不通。 - The dense dark jungle, obviously a closed book to an outsider, is an open book to the aboriginals.
黑暗稠密的丛林，对外来者显然是神秘莫测的，但对土著来说却毫无神秘可言。 - The exams will be closed book unless otherwise indicated.
如无明确指示，测验将闭卷进行。 - All examinations are closed book and closed notes.
测验中均禁止看书或笔记。 - The man's early life is a closed book.
那人的早年生活是个不可告人的谜。 - Even though she has lived in Beijing for several years, Chinese men are still a closed book to Cathie Watson.
即使已经在北京生活多年，凯蒂•沃森对于中国男士还是知之甚少。 - He closed the book, marking his page, and placed it on the table beside him.
他关闭了书，标示他的页，而且放它在他旁边的桌子上。 - I'm afraid accountancy is a closed book to me.
我恐怕对会计学一窍不通。 - Sarah closed the book and laid it aside.
萨拉合上书，把它放在了一边。 - Philosophy is a closed book to me.
我对哲学一窍不通。