duplicate

我们不需要重复他们已经完成的工作。

We don't need to ___duplicate the work they've already done.

这把锁配有两把钥匙，可供两人使用。

The lock comes with ___duplicate keys for two people to use.

她需要复制这份文件以备将来参考。

She needs to ___duplicate this document for future reference.