英単語＋例文
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dutifully (忠実に): She dutifully cared f…
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efficacy (効果): Researchers are studyin…
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dweller (住人): City dwellers often face…
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dwelling (住居): The ancient dwelling wa…
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dwindle (減少する): The team’s chanc…
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dynasty (王朝): The Han Dynasty ruled Ch…
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eavesdrop (立ち聞きする): She accidentally o…
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ebb (衰退): His enthusiasm began to ebb …
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echelon (階層): The company’s uppe…
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economics (経済学): He studied economics …