全境地形分为亚马孙平原、巴拉圭盆地、巴西高原和圭亚那高原，其中亚马孙平原约占全国面积的1/3。
The whole situation into amazon basin-shaped, Paraguay basin, Brazil and Guyana highland plateau, where the Amazon plains area accounting for about 1 / 3.
公元前138年左右，乌孙举族西迁至伊犁河谷周围重新建国，此后其余部又向南方的葱岭(帕米尔高原)内外扩散。
About 138 BC, all the Wusun migrated westward to the Ili river valley and rebuilt the state there. Later, the rest of the Wusun spread southward to the Cong Ling Ridges (the Pamirs).
郭凤霞，孙京。2012。雷暴云起电机制及其数值模拟的回顾与进展[J]。高原气象，31 (3)：862 - 874。
Guo Fengxia, Sun Jing. 2012. Review and progress of thunderstorm electrification mechanisms and numerical modelings [J]. Plateau Meteor, 31 (3) : 862-874.
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