challenge

• 名词，指需要付出努力、技能或决心才能克服的困难任务、问题或情况；也指向某人发起的挑战或质疑。

A noun referring to a difficult task, problem, or situation that requires effort, skill, or determination to overcome.

1. Difficult taskA2formal

   A task or situation that tests someone's abilities or requires great effort.

   挑战

   • Climbing the mountain was a huge challenge for the team.
   • Learning a new language can be a rewarding challenge.
   • She faced the challenge of starting her own business.

   同义词difficultyhurdleobstacleordealproblemtasktesttrial

   反义词breezecinchpicnicpushoversnap

2. Invitation to competeB1formal

   An invitation or call to take part in a contest, competition, or fight.

   挑战

   • He issued a challenge to his rival to a chess match.
   • The team accepted the challenge to play against the champions.
   • She threw down a challenge to her classmates to beat her score.

   同义词calldaregauntletinvitationprovocationsummons

3. Questioning or objectionB2formal

   An act of questioning the truth, validity, or legality of something.

   质疑

   • The lawyer raised a challenge to the evidence presented.
   • There was a challenge to the election results.
   • His statement faced a challenge from the audience.

   同义词contestationdisputedissentdoubtobjectionprotestqueryquestion

   反义词acceptanceagreementendorsementvalidation

• 动词，用于表示邀请某人参加比赛或竞争，以及质疑某事的真实性或合理性。

A verb used to indicate the act of inviting someone to compete or take part in a contest, or to question or dispute the truth or validity of something.

1. Invite to competeB1formal

   To invite someone to take part in a contest, competition, or argument.

   挑战

   • He challenged his friend to a game of chess.
   • She challenged the champion to a rematch.
   • The team challenged their rivals to a debate.

   同义词call outdaredefyinviteprovokesummon

   反义词accept

2. Question or disputeB2formal

   To question the truth, validity, or authority of something.

   质疑

   • The lawyer challenged the witness's testimony.
   • Scientists challenged the results of the study.
   • She challenged his right to make that decision.

   同义词call into questioncontestdisputedoubtimpugnqueryquestion

   反义词acceptagreeconcedeendorse

3. Test abilitiesB1formal

   To test someone's skills, strength, or determination.

   考验

   • The difficult puzzle challenged her mind.
   • The marathon challenged his endurance.
   • This job will challenge your problem-solving skills.

   同义词provestraintaxtesttry