opportunisticKK [ˏɑpɚˏtuˋnɪstɪk] /ˌɑpɚˌtuˈnɪstɪk/發音形容詞1投機的、機會主義的、見機行事的貶義Critics called the mayor's sudden change of position purely opportunistic.批評者說市長突然改變立場純粹是投機。2善於抓住機會的、隨機應變的She scored an opportunistic goal after the goalkeeper slipped.守門員滑倒後,她抓住機會進了一球。3機會性的醫學Patients with weak immune systems are prone to opportunistic infections.免疫系統較弱的病人容易發生機會性感染。