Problems
来自Big Physics
late Middle English (originally denoting a riddle or a question for academic discussion): from Old French probleme, via Latin from Greek problēma, from proballein ‘put forth’, from pro ‘before’ + ballein ‘to throw’.
late Middle English (originally denoting a riddle or a question for academic discussion): from Old French probleme, via Latin from Greek problēma, from proballein ‘put forth’, from pro ‘before’ + ballein ‘to throw’.