a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence); "speculations about the outcome of the election"; "he dismissed it as mere conjecture" 推測や推量で形成された仮説（普通はっきりとした証拠がない）。
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【上位】 a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena; "a scientific hypothesis that survives experimental testing becomes a scientific theory"; "he proposed a fresh theory of alkalis that later was accepted in chemical practices" 自然世界への仮定的洞察。証明されてはいないが、本当だとすれば、ある事実や現象を説明することができる概念。
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【上位】 a message expressing a belief about something; the expression of a belief that is held with confidence but not substantiated by positive knowledge or proof; "his opinions appeared frequently on the editorial page" 何かについて信念を表しているメッセージ。自信を持って持たれているが、確かな知識または証明により実証されていない信念の表現。
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