人们对通过脑细胞存储记忆的机制还不是很清楚.
The mechanism by which brain cells store memories is not clearly understood.
在二十世纪中叶,美国画家和雕塑家j就开始对艺术具有世界范围的影响力.
By the middle of twentieth century, painters and sculptors in the United States had begun to exert a great worldwide influence over art .位于新泽西洲东部的伊丽莎白市是一个主要的购物和制造中心.
In the eastern part of New Jersy lie the city of Elizabeth,a major shopping and manufacturing center.
