英语一句话有两个动词

The module also calculates an expected overall loss of sequence were the library to be deduplicated.
句中calculates和were都是动词。不懂were后面的部分怎么在整句话中翻译。

问题已关闭是因为自己已经读懂了。由于不能自问自答，故在补充问题这里回答一下。
were...后面是if的虚拟语气倒装。全句是：
If the library were to be deduplicated, the module also calculates an expected overall loss of sequence.
倒装后是：
Were the library to be deduplicated, the module...
之后条件部分移到主句后面，变成：
The module ... were the library to be deduplicated.

The module also calculates an expected overall loss of sequence were the library to be deduplicated.

the library to be deduplicated 图书馆被重复项消除