自1978年中国实行儿童计划免疫以来,中国儿童的健康发展水平和营养状况不断提高。Since the implementation of planned immu

游客2024-01-02  21

问题 自1978年中国实行儿童计划免疫以来,中国儿童的健康发展水平和营养状况不断提高。

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答案 Since the implementation of planned immunization for children in 1978, the development level and nourishment situation of Chinese children have kept improving.

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