求翻译：承包商还应当准备详细的设计方案来确保施工按时按质按合同文件的要求标准完成，且与现有的系统以可能的方式完全融合。是什么意思？

Contractor should also prepare a detailed design to ensure quality construction on time and according to standards required by the contract documents to complete, and with the existing system to be fully integrated way.

The contractor also should be prepared to detail design of the program to ensure quality construction on time and according to the contract documents for the complete standards, and with the existing system may be the way to full integration.

The contractor also must prepare the detailed design proposal to guarantee the construction to complete on time according to the nature according to the contract document request standard, also to fuse completely with the existing system by the possible way.

Contractors should also prepare detailed design solutions to ensure that the construction completed on time according to the quality standards required by the contract documents, and complete integration with the existing system that can.

Contractor should also prepare a detailed design to ensure quality construction on time and according to standards required by the contract documents to complete, and with the existing system to be fully integrated way.