since the human population broke the 7 billion mark late last year, feeding the growing population is the greatest challenge to humanity.
여기서 mark를 뭐라고 해석 해야 될까요?
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2022-05-16 03:07:06
since the human population broke the 7 billion mark late last year, feeding the growing population is the greatest challenge to humanity.
여기서 mark를 뭐라고 해석 해야 될까요?