The data test and practice show that the reformed system is safe and reliable in operation, accurate in metering, convenient to maintain and operation as well as management.

数据试验与实践证明，改造后的成套原油仪表计量系统技术先进、运行安全可靠、计量精度高、维修操作方便，便于管理。

youdao

You can maintain backward compatibility by creating a new operation based on the old one and keeping both in the interface.

可以通过基于旧操作创建新操作，并同时保持两个接口来保持向后兼容性。

youdao

However, as the complexity of the operation grows, this kind of code can get complicated and difficult to maintain.

不过，随着操作变得越来越复杂，这类代码也会变得很复杂很难维护。

youdao

The effort has been to squeeze the Taliban out of certain areas and the challenge now is to hold those areas and maintain dominance of those areas that is surely what the whole operation has been, has been all about,".

VOA: standard.2009.07.27

In Northern Ireland, my government will continue to work towards the full implementation of all aspects of the Belfast Agreement and maintain close co-operation with the Republic of Ireland.

BBC: The Queen's speech in full

As we move forward to complete this project by next June, we will maintain our firm commitment to the maintenance and operation of the system, and I hope to see wonderful results when we begin to make the world's top performing supercomputer available to users around the world.

ENGADGET: Fujitsu K supercomputer now ranked fastest in the world, dethrones China's Tianhe-1A

Proponents maintain that the operation improves hygiene, in turn, reducing infection and the risk of cancer.

CNN: Health