concurrent:同时发生的;并存的双语例句1.He will actually be serving three concurrent five-year sentences实际上,他将服3个5年徒刑,合并执行。concerted:同心协力的;努力的双语例句1.But a concerted effort has begun to improve the quality of the urban air.但是各方已经开始共同努力的改善城镇空气质量。