unable to be placated
难平息的,不能缓和的,不饶恕的,不宽容的
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he was an implacable enemy of Ted's .他是泰德的死敌。
relentless; unstoppable
无情的;不可阻挡的
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the implacable advance of the enemy .敌人势不可挡的前进。
"late Middle English: from Latin