On rough-weather days of winter when farm folks were forced to remain in the house, someone would ring us and ask Dad to play, and usually it developed into a network affair.
当严冬季节将务农的人们困在室内的时候,就会有人给我们打电话,请爸爸给他们拉小提琴。 久而久之,这慢慢成为了一种社交生活。
Each ring road of Beijing is a rough division of social class.
北京的每一条环线都是一个阶层的粗略划分。
The properties of the homomorphic images of rough subrings and rough ideals are obtained by discussing the variation of approximation operators under homomorphic mapping in the ring.
对同态映射下环中近似集合的变化规律进行了讨论，得到了粗糙子环、粗糙理想同态象的若干性质。
They can generate a P-rough integral chain, P-rough integral ring and P-rough integral ring chain.
并且在不同的迁移族不断作用下生成P-粗积分链、P-粗积分环及P-粗积分环链。
They can generate a P-rough integral chain, P-rough integral ring and P-rough integral ring chain.
并且在不同的迁移族不断作用下生成P-粗积分链、P-粗积分环及P-粗积分环链。
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