This area receives 149 to 216 millimeters of rainfall a year on average, and the basins pass most of their time as saltpans.
这个区域的平均年降雨量为149至216毫米（小于1英寸），湖泊所在的盆地多数时候干涸为盐田。
Each tier will take on average 12months to pass but fellows may take longer or shorter time depending ontheir previous training and programs.
每个阶段课程平均12个月，根据在职医生之前的培训和当即的培训效果时间可长可短。
Each tier will take on average 12months to pass but fellows may take longer or shorter time depending ontheir previous training and programs.
每个阶段课程平均12个月，根据在职医生之前的培训和当即的培训效果时间可长可短。
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