请仔细阅读合同中的保密条款。

Please read the confidentiality ___clause in the contract carefully.

合同中有一个条款规定了付款期限。

There is a ___clause in the contract that specifies the payment deadline.

在主句后面，他加了一个从句来补充说明。

After the main sentence, he added a ___clause to explain further.

这个复合句包含一个主句和一个从句。

This complex sentence has one main ___clause and one subordinate ___clause.