【election】什么是by-election

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【答案】 名词,递补选举,[法] 补选,缺补选举
　　美国传统辞典 A special election held between general elections to fill a vacancy,as for a parliamentary seat.
　　朗曼 especially BrE a special election to replace a politician who has left parliament or died
　　牛津英汉双解 election of a new Member of Parliament in a single constituency whose member has died or resigned （单独在某一选区举行的）国会议员的补缺选举