challenge
Definition
A task or situation that tests someone's abilities; a call to prove the truth of a claim.
中文 测试某人能力的任务或情境；要求证明某主张真实性的呼吁。
Example
"Running a marathon is a physical challenge that requires months of training."
A task or situation that tests someone's abilities; a call to prove the truth of a claim.
中文 测试某人能力的任务或情境；要求证明某主张真实性的呼吁。
"Running a marathon is a physical challenge that requires months of training."