Back up, to take a copy of computer data and store it somewhere else in case you lose the original data.

备份，获取计算机数据的副本并将其存储在其他地方，以防你丢失原始数据。

One of Calhoun's men took a copy of the pamphlet to Secretary Eaton and asked him to show it to President Jackson.

卡尔霍恩的一个手下把小册子的副本交给伊顿部长，请伊顿将其交与总统杰克逊过目。

What I'm going to do here is take a copy of the number line and place it diagonally in space, somehow, with the number zero sitting at the origin.

这里我要做的是复制一份数轴并将其对角线放在空间中 以0为原点。

One of Calhoun's men took a copy of the pamphlet to Secretary Eaton and asked him to show it to President Jackson. He told Eaton that the pamphlet would not be published without Jackson's approval.

卡尔霍恩的部下拿着这本小册子，交给战争部长伊顿，请他转交杰克逊总统，并告诉伊顿说，没有杰克逊的批准，他们是不会公开发行这本小册子的。