1、 The disease affects a small area of in the middle the brain called the substantia nigra.
该疾病侵袭大脑中部一小部分被称为黑质的脑细胞.
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2、 By determination and theory, actual consumption of Populus simon ii x nigra was analysed and studied.
通过观测和理论推导, 分析研究了小黑杨幼龄林对土壤水的实际消耗量.
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