| 单词 | ultra |
| 释义 | ultra /ul"treuh/, adj. 1. going beyond what is usual or ordinary; excessive; extreme. n. 2. an extremist, as in politics, religion, fashion, etc. 3. (cap.) Mil. the British code name for intelligence gathered by decrypting German wireless communications enciphered on the Enigma machine during World War II. [independent use of ULTRA-, or shortening of words prefixed with it] |
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