1. 一劳永逸; 限此一次; 断然, 爽快：once and again 一再, 再三 | once and away 一劳永逸; 限此一次; 断然, 爽快 | once for all 一劳永逸; 永久地; 彻底地

2. 一次了解地,彻底地：once and again%[]%再三地% | once and away%[]%一次了解地,彻底地% | once and for all%[]%只此一次,下不为例%

3. 一劳永逸地,永远地,彻底地：The white horse went on top in the last lap. 这匹白马在比赛的最后一圈领先. | once and away一劳永逸地,永远地,彻底地: | Let's solve the problem once and away. 让我们彻底地解决这个问题吧.