| 单词 | challenger |
| 释义 | challenger /chal"in jeuhr/, n. 1. a person or thing that challenges. 2. Boxing. a boxer who fights a champion for his championship title. 3. Radio. interrogator (def. 2). 4. (cap., italics) U.S. Aerospace. the second space shuttle to orbit and return to earth: exploded 11/2 min. after launch on Jan. 28, 1986, causing the death of all seven on board. [1250-1300; ME; see CHALLENGE, -ER1] |
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