challenge
/ˈt͡ʃæl.ɪnd͡ʒ/
Nghĩa 1
A difficult task or problem to overcome.
“He faced a challenge while climbing the steep mountain.”
Thêm vào My Deck
Nghĩa 2
a call to engage in a contest
“She issued a challenge to her friend to race.”
Thêm vào My Deck
