We should back up our data regularly by making soft copies of them.

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Weshouldbackupourdataregularlybymakingsoftcopiesofthem.Weshouldbackupourdataregularlybymakingsoftcop

We should back up our data regularly by making soft copies of them.
We should back up our data regularly by making soft copies of them.

We should back up our data regularly by making soft copies of them.
back在这里应该是不及物动词,所以与UP 连用构成vt." data"是资料的意思.by 是通过,表示一种手段 ;“making soft copies of them”这里的"them"是指前面提到的“data".
我认为应该是:将资料拷贝到软盘里面将有利于我们更好的保存的它们.

我们应该将这些数据用软盘有规律的保存一些备份

back up 是备份(v)的意思,regularly 规律地,定时地,making soft copy of them 对它们进行存盘
我们应规律地通过对数据存盘来备份它们。

我们应该定期用软盘定期备份我们的数据.

我们应该用软盘定期备份数据。