Yes, a duplicate copy is enough.

是，你给我复印一份就行。

youdao

Otherwise, it's just storing in memory a duplicate copy of the POST data, which isn't needed.

否则，它仅在内存中存储POST数据的一个副本，而这没有必要。

youdao

This way, new hardware is introduced into the environment only as a duplicate copy of the other machines.

这样，可以将新硬件仅作为其他计算机的副本引入环境。

youdao

To make it less overwhelming, he suggests making sure the "retweets enabled" checkbox near the top is unchecked to eliminate duplicate tweets that occur as people interested in the fire copy updates to share with their own Twitter followers.

CNN: New app tracks Colorado wildfires