Rau càng cua: Một loại “rau trời”
Cập nhật: 08:09 08/12/2010 GMT+7
Có thể xem rau càng cua là một loại "rau trời", vì hiếm ai trồng loại rau này. Nó chỉ mọc hoang, mọc nhều và tươi tốt ở những nơi ẩm ướt.
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