A2 noun ˈtʃælɪndʒ
challenge
挑戦
Meaning
A call to take part in a contest or competition, especially a demanding or stimulating one; a task or situation that tests someone's abilities.
Example
Plastic pollution poses a significant challenge to global health.
プラスチック汚染は、世界の健康にとって重要な挑戦を提起しています。