Matching Pairs Secret WritingOnline version ........... by Tea Cher 1 Cunning 狡猾 2 Alum 明矾 3 Substitution 代换 4 Ancient 古老的 5 Secret agent 密探 6 Scalp 头皮 7 Cryptography 密码学: 8 Steganography 隐写术 9 Vital information 重要信息 10 Transposition 换位 A chemical compound used for various purposes, including as a mordant in dyeing and as an ingredient in some inks. Critical or essential information that is of utmost importance. The skin covering the top of the head. Belonging to a time long past, typically referring to a period in history. Clever, sly, or crafty in achieving one's goals or solving problems. The practice or study of techniques for secure communication in the presence of third parties. The practice of concealing messages or information within other non-secret data. The act of replacing one thing with another. A person who works covertly to gather information or perform espionage activities. The act of changing the position or order of something.
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