一去不返
一去不返一去不返[yī qù bù fǎn]1.■be gone forever; be gone, never to return; go away forever; go for good and all; leave for good; Once gone, never comes back [returns].; past and gone
热门单词
- 人口性别构成 sex structure of population;
- 人口总数 population size
- 人口控制 population control;
- 人口政策 population policy;
- 人口文化构成 culturel structure of population;
- 人口普查 population census; census;
- 人口更替 population replacement;
- 人口机械变动 mechanical change of population;
- 人口更新 regeneration of population;
- 人口构成 population composition;
- 人口死亡率 human mortality;
- 人口民族构成 nationality structure of population;
- 人口清查 head count;
- 人口爆炸 population explosion;
- 人口特性 characteristics of the population;
- 人口理论 demographic theory;
- 人口生育力 human fecundity;
- 人口登记 registration of population;
- 人口科学 population science;
- 人口移动 population moving;
- 人口素质 population quality;
