英単語＋例文
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opponent (対戦相手): He defeated his oppon…
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oral (口頭の): She passed the oral examin…
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opportunity (機会): This is a great oppo…
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opportunity to do (～する機会): Don’t…
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oppose (反対する): Many people oppose the …
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opposite (反対の): The opposite of hot is…
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opposition (反対): There is strong oppos…
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oppress (圧迫する): The dictator oppressed…
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oppression (抑圧): The people suffered u…
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optimism (楽観主義): His optimism is conta…