青蛙是益虫,保护庄稼,
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青蛙是益虫,保护庄稼,
青蛙是益虫,保护庄稼,
青蛙是益虫,保护庄稼,
The frog is a kind of beneficial insect which can protect the crop.
青蛙是益虫,保护庄稼,
青蛙是益虫,保护庄稼,
青蛙是益虫,保护庄稼,
The frog is a kind of beneficial insect which can protect the crop.