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English word

challenge

B1Academic AWL-5Frequent NGSL-1
UK /ˈtʃælɪndʒ/US /ˈtʃælɪndʒ/
noun

a new or difficult task that tests somebody’s ability and skill

verb

to question whether a statement or an action is right, legal, etc.; to refuse to accept something

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Ban Ki-moon's Harvard Kennedy School Graduation Address (2023) video example

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During the following decade, Secretary-General Moon addressed many of the world's most pressing public challenges—including wars, extreme poverty, climate change, humanitarian disasters, gender inequity, and lack of human rights.

Ban Ki-moon's Harvard Kennedy School Graduation Address (2023)

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For me taking classes in English was a real challenge.

Akio Toyoda at Babson's Centennial Commencement (2019)Hear this sentence →

So there are three immediate challenges we face already at the societal level.

Why AI Is Incredibly Smart and Shockingly StupidHear this sentence →

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