chal·leng·ing 
(chălən-jĭng)
(chălən-jĭng)adj.
Requiring the full application of one's abilities, attention, or resources: a challenging role for an inexperienced performer; a challenging homework assignment.
| 单词 | challenging |
| 释义 | chal·leng·ing (chălən-jĭng)adj. Requiring the full application of one's abilities, attention, or resources: a challenging role for an inexperienced performer; a challenging homework assignment. |
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