n.复制；副本

We must avoid wasteful duplication of effort. 我们必须避免无谓的复重劳动。

His answers were a duplication of her sister's. 他的回答和他姐姐的如出一辙。

We will attempt to avoid duplication by appropriate cross references. 将用适当的前后对照的方法来避免重复。

This is to avoid code duplication. 这避免了代码副本的出现。

重复