challenging [i t.2lind[i? ]    (¼øÀ§: 15600 - ´ëÁ¹ ¼öÁØ)  
¶æ Çü) µµÀüÀûÀÎ; ÀÇ¿åÀ» µ¸¿ì´Â, ÀÚ±ØÀûÀÎ
Mean Calling for full use of one's abilities or resources in a difficult but stimulating effort.
ÆÄ»ý¾î challengingly  [ºÎ]
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