词汇	无限的哀愁
释义	无限的哀愁 be extremely grieved哀愁
随便看	population shift population shifting population shifts Populations,High Fertility Populations,High-Income population simulation Populations,Indigenous Population sinks rapidly population site population situation population size Population Size and Growth Population Size and Its Growth in China population-size-dependent branching processes population-size-dependent immigra-tion Population size estimate Population size estimation population size hietarchy population size index population size of hierarchy population size restriction population-size restriction population sizes Populations,Low Fertility Populations,Low Income