《辞海》说，笑是“因感喜悦而开怀”，也是仁攀类心坎世界的七情六欲之一，但它却是一种高质量的精力状况，特殊是微笑。
Citing says, laughing is "for feeling joy and laugh," the human mind is one of the seven feelings six desires, but it is a kind of high quality state of mind, especially to smile.
玉米矮花叶病是玉米生产上的一类重要病毒病，在世界各玉米产区都有发生，长期以来一直严重影响着玉米的产量和质量。
Maize Dwarf Mosaic disease is a kind of serious virus disease in corn production. It occurs in the corn producing areas all over the world.
玉米矮花叶病是玉米生产上的一类重要病毒病，在世界各玉米产区都有发生，长期以来一直严重影响着玉米的产量和质量。
Maize Dwarf Mosaic disease is a kind of serious virus disease in corn production. It occurs in the corn producing areas all over the world.
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