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目的利用中国食物与营养监测数据，描述1992~2005年中国婴幼儿喂养的改善情况。
Objective To describe the improvement of complementary feeding during year 1992 to 2005.
youdao
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目的利用中国食物与营养监测数据，描述1992~2005年中国婴幼儿喂养的改善情况。
Objective To describe the improvement of complementary feeding during year 1992 to 2005.
youdao