| 单词 | X |
| 释义 | X 1. experimental. 2. extra. 3. extraordinary. Symbol. 1. the 24th in order or in a series, or, when I is omitted, the 23rd. 2. (sometimes l.c.) the Roman numeral for 10. Cf. Roman numerals. 3. Christ. 4. Christian. 5. cross. 6. Elect. reactance. 7. Slang. a ten-dollar bill. 8. (in the U.S.) a rating of the Motion Picture Association of America for movies with subject matter that is suitable for adults only: persons who are under age (usually 17) will not be admitted. Cf. G (def. 7), PG, PG-13, R (def. 5). 9. (in Great Britain) a designation for a film recommended for adults only. Cf. A (def. 11), AA (def. 5), U (def. 5). 10. a person, thing, agency, factor, etc., of unknown identity. 11. Chem. (formerly) xenon. |
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