He gave ma a book which I kept to this day.
他曾经送给我一本书。这本书我一直保存至今。
Jack Ma is CEO of China's Alibaba Group, in which Yahoo has a 43% stake.
中国阿里巴巴集团(Alibaba Group)的CEO马云也是人选之一。雅虎在该集团持有43%的股份。
Clerk: Yes, ma 'am. We have three different box sizes which we can rent.
职员：好的，夫人。我们有三种不用规格的箱子可供出租。
Different size of the electrode has different current, which from mA to pA grade.
不同尺寸的电极具有不同数量级大小的电流。
Different size of the electrode has different current, which from mA to pA grade.
不同尺寸的电极具有不同数量级大小的电流。
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