the aging of a population
英
美
the aging of a population的用法和樣例:
例句
- Aging has become a social problem.
老齡化已成為一個(gè)社會(huì )問(wèn)題。
- China's population is aging at unprecedented levels.
使中國人口老齡化達到了前所未有的水平。
the aging of a population的相關(guān)資料:
臨近單詞
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