They are mainly distributed in the palaearctic, nearctic, oriental, ethiopian region.
他们主要分布在古北区、东洋区、新北区和非洲区。
Up to the present 239 species of the genus have been known from the world. they are mainly distributed in the palaearctic, nearctic, oriental, ethiopian region.
迄今为止，该属全世界共记载239种，为世界性分布，但主要分布于古北区、东洋区、新北区和非洲区。
Three tobacco varieties now dominate the world market and Thailand grows all three: Virginia in the North, Burley in the central region and Oriental in the Northeast.
三个烟草品种现在主导着世界市场，泰国现在种植三种烟草：在北方，种植弗吉尼亚烤烟，在中部种植白肋烟，在东北地区种植香料烟。
Three tobacco varieties now dominate the world market and Thailand grows all three: Virginia in the North, Burley in the central region and Oriental in the Northeast.
三个烟草品种现在主导着世界市场，泰国现在种植三种烟草：在北方，种植弗吉尼亚烤烟，在中部种植白肋烟，在东北地区种植香料烟。
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