nigra

Brassica alba yields white mustard seeds; Brassica nigra, black mustard seeds.

白质芸苔生产白色芥茉籽, 黑质芸苔生产黑色芥茉籽.

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At the left, normal numbers of neurons substantia nigra are pigmented.

在左边黑质处是正常数目的神经元,并且出现色素沉着.

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Porta Nigra of Trier. Another view.

特里尔的古罗马城门. 另一角度.

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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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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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Porta Nigra of Trier. This gate dates back to about A . D . 180 built by the Romans.

特里尔的古罗马城门. 这座城门可以追索到 公元 180年,是由罗马人建的.

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